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Finding the Fourth Proportional to 8,838.75, 13,263.57 and 7,931.13

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Solution

The fourth proportional to 8,838.75, 13,263.57 and 7,931.13 is: 11,901.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,838.75 : 13,263.57 = 7,931.13 : x
  2. Step 2: Convert to fraction form
    8,838.75/13,263.57 = 7,931.13/x
  3. Step 3: Cross multiply
    8,838.75x = 13,263.57 × 7,931.13
  4. Step 4: Simplify right side
    8,838.75x = 105,195,097.93
  5. Step 5: Solve for x
    x = 105,195,097.93/8,838.75
  6. Step 6: Final answer
    x = 11,901.58

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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.