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Finding the Fourth Proportional to 2,138.78, 2,950.08 and 1,609.04

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Solution

The fourth proportional to 2,138.78, 2,950.08 and 1,609.04 is: 2,219.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138.78 : 2,950.08 = 1,609.04 : x
  2. Step 2: Convert to fraction form
    2,138.78/2,950.08 = 1,609.04/x
  3. Step 3: Cross multiply
    2,138.78x = 2,950.08 × 1,609.04
  4. Step 4: Simplify right side
    2,138.78x = 4,746,796.72
  5. Step 5: Solve for x
    x = 4,746,796.72/2,138.78
  6. Step 6: Final answer
    x = 2,219.39

Related Problems

Find fourth proportional to 1,069.39, 1,475.04 and 804.52
Half scale
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Double scale
Find fourth proportional to 2,139.78, 2,951.46 and 1,610.04
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.