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Finding the Fourth Proportional to 3,407.71, 4,702.53 and 1,915.59

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Solution

The fourth proportional to 3,407.71, 4,702.53 and 1,915.59 is: 2,643.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,407.71 : 4,702.53 = 1,915.59 : x
  2. Step 2: Convert to fraction form
    3,407.71/4,702.53 = 1,915.59/x
  3. Step 3: Cross multiply
    3,407.71x = 4,702.53 × 1,915.59
  4. Step 4: Simplify right side
    3,407.71x = 9,008,119.44
  5. Step 5: Solve for x
    x = 9,008,119.44/3,407.71
  6. Step 6: Final answer
    x = 2,643.45

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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.