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Finding the Fourth Proportional to 8,750.86, 12,073.53 and 7,908.87

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Solution

The fourth proportional to 8,750.86, 12,073.53 and 7,908.87 is: 10,911.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,750.86 : 12,073.53 = 7,908.87 : x
  2. Step 2: Convert to fraction form
    8,750.86/12,073.53 = 7,908.87/x
  3. Step 3: Cross multiply
    8,750.86x = 12,073.53 × 7,908.87
  4. Step 4: Simplify right side
    8,750.86x = 95,487,979.21
  5. Step 5: Solve for x
    x = 95,487,979.21/8,750.86
  6. Step 6: Final answer
    x = 10,911.84

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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.