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Finding the Fourth Proportional to 7,373.90, 11,065.42 and 2,991.40

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Solution

The fourth proportional to 7,373.90, 11,065.42 and 2,991.40 is: 4,488.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,373.90 : 11,065.42 = 2,991.40 : x
  2. Step 2: Convert to fraction form
    7,373.90/11,065.42 = 2,991.40/x
  3. Step 3: Cross multiply
    7,373.90x = 11,065.42 × 2,991.40
  4. Step 4: Simplify right side
    7,373.90x = 33,101,097.39
  5. Step 5: Solve for x
    x = 33,101,097.39/7,373.90
  6. Step 6: Final answer
    x = 4,488.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.