Home / 8,761.77-13,137.75-2,915.19

Finding the Fourth Proportional to 8,761.77, 13,137.75 and 2,915.19

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Solution

The fourth proportional to 8,761.77, 13,137.75 and 2,915.19 is: 4,371.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,761.77 : 13,137.75 = 2,915.19 : x
  2. Step 2: Convert to fraction form
    8,761.77/13,137.75 = 2,915.19/x
  3. Step 3: Cross multiply
    8,761.77x = 13,137.75 × 2,915.19
  4. Step 4: Simplify right side
    8,761.77x = 38,299,037.42
  5. Step 5: Solve for x
    x = 38,299,037.42/8,761.77
  6. Step 6: Final answer
    x = 4,371.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.