Home / 3,407.38-4,702.17-1,915.30

Finding the Fourth Proportional to 3,407.38, 4,702.17 and 1,915.30

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Solution

The fourth proportional to 3,407.38, 4,702.17 and 1,915.30 is: 2,643.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,407.38 : 4,702.17 = 1,915.30 : x
  2. Step 2: Convert to fraction form
    3,407.38/4,702.17 = 1,915.30/x
  3. Step 3: Cross multiply
    3,407.38x = 4,702.17 × 1,915.30
  4. Step 4: Simplify right side
    3,407.38x = 9,006,066.20
  5. Step 5: Solve for x
    x = 9,006,066.20/3,407.38
  6. Step 6: Final answer
    x = 2,643.11

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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.