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Finding the Fourth Proportional to 8,501.76, 11,715.84 and 6,927.12

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Solution

The fourth proportional to 8,501.76, 11,715.84 and 6,927.12 is: 9,545.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,501.76 : 11,715.84 = 6,927.12 : x
  2. Step 2: Convert to fraction form
    8,501.76/11,715.84 = 6,927.12/x
  3. Step 3: Cross multiply
    8,501.76x = 11,715.84 × 6,927.12
  4. Step 4: Simplify right side
    8,501.76x = 81,157,029.58
  5. Step 5: Solve for x
    x = 81,157,029.58/8,501.76
  6. Step 6: Final answer
    x = 9,545.91

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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.