Home / 6,511.55-9,767.18-1,581.21

Finding the Fourth Proportional to 6,511.55, 9,767.18 and 1,581.21

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Solution

The fourth proportional to 6,511.55, 9,767.18 and 1,581.21 is: 2,371.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,511.55 : 9,767.18 = 1,581.21 : x
  2. Step 2: Convert to fraction form
    6,511.55/9,767.18 = 1,581.21/x
  3. Step 3: Cross multiply
    6,511.55x = 9,767.18 × 1,581.21
  4. Step 4: Simplify right side
    6,511.55x = 15,443,966.64
  5. Step 5: Solve for x
    x = 15,443,966.64/6,511.55
  6. Step 6: Final answer
    x = 2,371.78

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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.