Home / 8,505.12-12,758.64-3,887.52

Finding the Fourth Proportional to 8,505.12, 12,758.64 and 3,887.52

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Solution

The fourth proportional to 8,505.12, 12,758.64 and 3,887.52 is: 5,831.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,505.12 : 12,758.64 = 3,887.52 : x
  2. Step 2: Convert to fraction form
    8,505.12/12,758.64 = 3,887.52/x
  3. Step 3: Cross multiply
    8,505.12x = 12,758.64 × 3,887.52
  4. Step 4: Simplify right side
    8,505.12x = 49,599,468.17
  5. Step 5: Solve for x
    x = 49,599,468.17/8,505.12
  6. Step 6: Final answer
    x = 5,831.72

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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.