Home / 2,955.08-4,079.30-1,998.20

Finding the Fourth Proportional to 2,955.08, 4,079.30 and 1,998.20

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Solution

The fourth proportional to 2,955.08, 4,079.30 and 1,998.20 is: 2,758.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,955.08 : 4,079.30 = 1,998.20 : x
  2. Step 2: Convert to fraction form
    2,955.08/4,079.30 = 1,998.20/x
  3. Step 3: Cross multiply
    2,955.08x = 4,079.30 × 1,998.20
  4. Step 4: Simplify right side
    2,955.08x = 8,151,257.26
  5. Step 5: Solve for x
    x = 8,151,257.26/2,955.08
  6. Step 6: Final answer
    x = 2,758.39

Related Problems

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Half scale
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Double scale
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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.