Home / 8,207.34-11,312.91-5,553.78

Finding the Fourth Proportional to 8,207.34, 11,312.91 and 5,553.78

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Solution

The fourth proportional to 8,207.34, 11,312.91 and 5,553.78 is: 7,655.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,207.34 : 11,312.91 = 5,553.78 : x
  2. Step 2: Convert to fraction form
    8,207.34/11,312.91 = 5,553.78/x
  3. Step 3: Cross multiply
    8,207.34x = 11,312.91 × 5,553.78
  4. Step 4: Simplify right side
    8,207.34x = 62,829,413.30
  5. Step 5: Solve for x
    x = 62,829,413.30/8,207.34
  6. Step 6: Final answer
    x = 7,655.27

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Half scale
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Double scale
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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.