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Finding the Fourth Proportional to 9,170.65, 12,655.29 and 5,393.08

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Solution

The fourth proportional to 9,170.65, 12,655.29 and 5,393.08 is: 7,442.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,170.65 : 12,655.29 = 5,393.08 : x
  2. Step 2: Convert to fraction form
    9,170.65/12,655.29 = 5,393.08/x
  3. Step 3: Cross multiply
    9,170.65x = 12,655.29 × 5,393.08
  4. Step 4: Simplify right side
    9,170.65x = 68,250,991.39
  5. Step 5: Solve for x
    x = 68,250,991.39/9,170.65
  6. Step 6: Final answer
    x = 7,442.33

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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.