Home / 8,905.13-12,294.67-5,719.71

Finding the Fourth Proportional to 8,905.13, 12,294.67 and 5,719.71

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Solution

The fourth proportional to 8,905.13, 12,294.67 and 5,719.71 is: 7,896.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,905.13 : 12,294.67 = 5,719.71 : x
  2. Step 2: Convert to fraction form
    8,905.13/12,294.67 = 5,719.71/x
  3. Step 3: Cross multiply
    8,905.13x = 12,294.67 × 5,719.71
  4. Step 4: Simplify right side
    8,905.13x = 70,321,946.95
  5. Step 5: Solve for x
    x = 70,321,946.95/8,905.13
  6. Step 6: Final answer
    x = 7,896.79

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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.