Home / 3,902.02-5,382.78-2,643.13

Finding the Fourth Proportional to 3,902.02, 5,382.78 and 2,643.13

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Solution

The fourth proportional to 3,902.02, 5,382.78 and 2,643.13 is: 3,646.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.02 : 5,382.78 = 2,643.13 : x
  2. Step 2: Convert to fraction form
    3,902.02/5,382.78 = 2,643.13/x
  3. Step 3: Cross multiply
    3,902.02x = 5,382.78 × 2,643.13
  4. Step 4: Simplify right side
    3,902.02x = 14,227,387.30
  5. Step 5: Solve for x
    x = 14,227,387.30/3,902.02
  6. Step 6: Final answer
    x = 3,646.16

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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.