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Finding the Fourth Proportional to 9,148.40, 12,625.04 and 5,169.42

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Solution

The fourth proportional to 9,148.40, 12,625.04 and 5,169.42 is: 7,133.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,148.40 : 12,625.04 = 5,169.42 : x
  2. Step 2: Convert to fraction form
    9,148.40/12,625.04 = 5,169.42/x
  3. Step 3: Cross multiply
    9,148.40x = 12,625.04 × 5,169.42
  4. Step 4: Simplify right side
    9,148.40x = 65,264,108.43
  5. Step 5: Solve for x
    x = 65,264,108.43/9,148.40
  6. Step 6: Final answer
    x = 7,133.94

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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.