Home / 5,477.18-8,215.78-1,581.90

Finding the Fourth Proportional to 5,477.18, 8,215.78 and 1,581.90

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Solution

The fourth proportional to 5,477.18, 8,215.78 and 1,581.90 is: 2,372.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,477.18 : 8,215.78 = 1,581.90 : x
  2. Step 2: Convert to fraction form
    5,477.18/8,215.78 = 1,581.90/x
  3. Step 3: Cross multiply
    5,477.18x = 8,215.78 × 1,581.90
  4. Step 4: Simplify right side
    5,477.18x = 12,996,542.38
  5. Step 5: Solve for x
    x = 12,996,542.38/5,477.18
  6. Step 6: Final answer
    x = 2,372.85

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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.