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Finding the Fourth Proportional to 8,805.65, 12,151.42 and 5,270.81

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Solution

The fourth proportional to 8,805.65, 12,151.42 and 5,270.81 is: 7,273.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,805.65 : 12,151.42 = 5,270.81 : x
  2. Step 2: Convert to fraction form
    8,805.65/12,151.42 = 5,270.81/x
  3. Step 3: Cross multiply
    8,805.65x = 12,151.42 × 5,270.81
  4. Step 4: Simplify right side
    8,805.65x = 64,047,752.12
  5. Step 5: Solve for x
    x = 64,047,752.12/8,805.65
  6. Step 6: Final answer
    x = 7,273.49

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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.