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Finding the Fourth Proportional to 9,159.57, 12,642.08 and 5,383.08

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Solution

The fourth proportional to 9,159.57, 12,642.08 and 5,383.08 is: 7,429.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,159.57 : 12,642.08 = 5,383.08 : x
  2. Step 2: Convert to fraction form
    9,159.57/12,642.08 = 5,383.08/x
  3. Step 3: Cross multiply
    9,159.57x = 12,642.08 × 5,383.08
  4. Step 4: Simplify right side
    9,159.57x = 68,053,301.09
  5. Step 5: Solve for x
    x = 68,053,301.09/9,159.57
  6. Step 6: Final answer
    x = 7,429.75

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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.