Home / 9,090.92-12,545.40-5,111.95

Finding the Fourth Proportional to 9,090.92, 12,545.40 and 5,111.95

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Solution

The fourth proportional to 9,090.92, 12,545.40 and 5,111.95 is: 7,054.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,090.92 : 12,545.40 = 5,111.95 : x
  2. Step 2: Convert to fraction form
    9,090.92/12,545.40 = 5,111.95/x
  3. Step 3: Cross multiply
    9,090.92x = 12,545.40 × 5,111.95
  4. Step 4: Simplify right side
    9,090.92x = 64,131,454.04
  5. Step 5: Solve for x
    x = 64,131,454.04/9,090.92
  6. Step 6: Final answer
    x = 7,054.45

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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.