Home / 9,090.86-12,545.55-5,314.34

Finding the Fourth Proportional to 9,090.86, 12,545.55 and 5,314.34

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Solution

The fourth proportional to 9,090.86, 12,545.55 and 5,314.34 is: 7,333.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,090.86 : 12,545.55 = 5,314.34 : x
  2. Step 2: Convert to fraction form
    9,090.86/12,545.55 = 5,314.34/x
  3. Step 3: Cross multiply
    9,090.86x = 12,545.55 × 5,314.34
  4. Step 4: Simplify right side
    9,090.86x = 66,671,349.55
  5. Step 5: Solve for x
    x = 66,671,349.55/9,090.86
  6. Step 6: Final answer
    x = 7,333.89

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Half scale
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Double scale
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Similar ratio
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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.