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Finding the Fourth Proportional to 8,934.40, 12,318.72 and 7,444.48

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Solution

The fourth proportional to 8,934.40, 12,318.72 and 7,444.48 is: 10,264.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,934.40 : 12,318.72 = 7,444.48 : x
  2. Step 2: Convert to fraction form
    8,934.40/12,318.72 = 7,444.48/x
  3. Step 3: Cross multiply
    8,934.40x = 12,318.72 × 7,444.48
  4. Step 4: Simplify right side
    8,934.40x = 91,706,464.67
  5. Step 5: Solve for x
    x = 91,706,464.67/8,934.40
  6. Step 6: Final answer
    x = 10,264.42

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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.