Home / 9,090.20-12,545.21-5,111.08

Finding the Fourth Proportional to 9,090.20, 12,545.21 and 5,111.08

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Solution

The fourth proportional to 9,090.20, 12,545.21 and 5,111.08 is: 7,053.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,090.20 : 12,545.21 = 5,111.08 : x
  2. Step 2: Convert to fraction form
    9,090.20/12,545.21 = 5,111.08/x
  3. Step 3: Cross multiply
    9,090.20x = 12,545.21 × 5,111.08
  4. Step 4: Simplify right side
    9,090.20x = 64,119,571.93
  5. Step 5: Solve for x
    x = 64,119,571.93/9,090.20
  6. Step 6: Final answer
    x = 7,053.70

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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.