Home / 8,513.92-11,750-5,157.56

Finding the Fourth Proportional to 8,513.92, 11,750 and 5,157.56

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Solution

The fourth proportional to 8,513.92, 11,750 and 5,157.56 is: 7,117.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,513.92 : 11,750 = 5,157.56 : x
  2. Step 2: Convert to fraction form
    8,513.92/11,750 = 5,157.56/x
  3. Step 3: Cross multiply
    8,513.92x = 11,750 × 5,157.56
  4. Step 4: Simplify right side
    8,513.92x = 60,601,330.00
  5. Step 5: Solve for x
    x = 60,601,330.00/8,513.92
  6. Step 6: Final answer
    x = 7,117.91

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1.5x scale

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.