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Finding the Fourth Proportional to 8,625.57, 12,875.41 and 7,400.85

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Solution

The fourth proportional to 8,625.57, 12,875.41 and 7,400.85 is: 11,047.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,625.57 : 12,875.41 = 7,400.85 : x
  2. Step 2: Convert to fraction form
    8,625.57/12,875.41 = 7,400.85/x
  3. Step 3: Cross multiply
    8,625.57x = 12,875.41 × 7,400.85
  4. Step 4: Simplify right side
    8,625.57x = 95,289,011.49
  5. Step 5: Solve for x
    x = 95,289,011.49/8,625.57
  6. Step 6: Final answer
    x = 11,047.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.