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Finding the Fourth Proportional to 8,809.60, 12,158.22 and 5,273.68

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Solution

The fourth proportional to 8,809.60, 12,158.22 and 5,273.68 is: 7,278.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,809.60 : 12,158.22 = 5,273.68 : x
  2. Step 2: Convert to fraction form
    8,809.60/12,158.22 = 5,273.68/x
  3. Step 3: Cross multiply
    8,809.60x = 12,158.22 × 5,273.68
  4. Step 4: Simplify right side
    8,809.60x = 64,118,561.65
  5. Step 5: Solve for x
    x = 64,118,561.65/8,809.60
  6. Step 6: Final answer
    x = 7,278.26

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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.