Home / 1,915.41-2,646.15-1,253.85

Finding the Fourth Proportional to 1,915.41, 2,646.15 and 1,253.85

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Solution

The fourth proportional to 1,915.41, 2,646.15 and 1,253.85 is: 1,732.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915.41 : 2,646.15 = 1,253.85 : x
  2. Step 2: Convert to fraction form
    1,915.41/2,646.15 = 1,253.85/x
  3. Step 3: Cross multiply
    1,915.41x = 2,646.15 × 1,253.85
  4. Step 4: Simplify right side
    1,915.41x = 3,317,875.18
  5. Step 5: Solve for x
    x = 3,317,875.18/1,915.41
  6. Step 6: Final answer
    x = 1,732.20

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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.