Home / 5,140.18-7,093.38-2,902.78

Finding the Fourth Proportional to 5,140.18, 7,093.38 and 2,902.78

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Solution

The fourth proportional to 5,140.18, 7,093.38 and 2,902.78 is: 4,005.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,140.18 : 7,093.38 = 2,902.78 : x
  2. Step 2: Convert to fraction form
    5,140.18/7,093.38 = 2,902.78/x
  3. Step 3: Cross multiply
    5,140.18x = 7,093.38 × 2,902.78
  4. Step 4: Simplify right side
    5,140.18x = 20,590,521.60
  5. Step 5: Solve for x
    x = 20,590,521.60/5,140.18
  6. Step 6: Final answer
    x = 4,005.80

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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.