Home / 3,407.40-4,702.38-1,915.24

Finding the Fourth Proportional to 3,407.40, 4,702.38 and 1,915.24

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Solution

The fourth proportional to 3,407.40, 4,702.38 and 1,915.24 is: 2,643.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,407.40 : 4,702.38 = 1,915.24 : x
  2. Step 2: Convert to fraction form
    3,407.40/4,702.38 = 1,915.24/x
  3. Step 3: Cross multiply
    3,407.40x = 4,702.38 × 1,915.24
  4. Step 4: Simplify right side
    3,407.40x = 9,006,186.27
  5. Step 5: Solve for x
    x = 9,006,186.27/3,407.40
  6. Step 6: Final answer
    x = 2,643.13

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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.