Home / 8,130.77-11,220.31-4,545.78

Finding the Fourth Proportional to 8,130.77, 11,220.31 and 4,545.78

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Solution

The fourth proportional to 8,130.77, 11,220.31 and 4,545.78 is: 6,273.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,130.77 : 11,220.31 = 4,545.78 : x
  2. Step 2: Convert to fraction form
    8,130.77/11,220.31 = 4,545.78/x
  3. Step 3: Cross multiply
    8,130.77x = 11,220.31 × 4,545.78
  4. Step 4: Simplify right side
    8,130.77x = 51,005,060.79
  5. Step 5: Solve for x
    x = 51,005,060.79/8,130.77
  6. Step 6: Final answer
    x = 6,273.09

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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.