Home / 8,688.28-13,007.56-5,760.76

Finding the Fourth Proportional to 8,688.28, 13,007.56 and 5,760.76

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Solution

The fourth proportional to 8,688.28, 13,007.56 and 5,760.76 is: 8,624.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.28 : 13,007.56 = 5,760.76 : x
  2. Step 2: Convert to fraction form
    8,688.28/13,007.56 = 5,760.76/x
  3. Step 3: Cross multiply
    8,688.28x = 13,007.56 × 5,760.76
  4. Step 4: Simplify right side
    8,688.28x = 74,933,431.35
  5. Step 5: Solve for x
    x = 74,933,431.35/8,688.28
  6. Step 6: Final answer
    x = 8,624.66

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1.5x scale

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.