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Finding the Fourth Proportional to 8,412.54, 12,554.00 and 7,388.70

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Solution

The fourth proportional to 8,412.54, 12,554.00 and 7,388.70 is: 11,026.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,412.54 : 12,554.00 = 7,388.70 : x
  2. Step 2: Convert to fraction form
    8,412.54/12,554.00 = 7,388.70/x
  3. Step 3: Cross multiply
    8,412.54x = 12,554.00 × 7,388.70
  4. Step 4: Simplify right side
    8,412.54x = 92,757,702.86
  5. Step 5: Solve for x
    x = 92,757,702.86/8,412.54
  6. Step 6: Final answer
    x = 11,026.12

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Double scale
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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.