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Finding the Fourth Proportional to 7,291.62, 10,937.43 and 2,909.12

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Solution

The fourth proportional to 7,291.62, 10,937.43 and 2,909.12 is: 4,363.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,291.62 : 10,937.43 = 2,909.12 : x
  2. Step 2: Convert to fraction form
    7,291.62/10,937.43 = 2,909.12/x
  3. Step 3: Cross multiply
    7,291.62x = 10,937.43 × 2,909.12
  4. Step 4: Simplify right side
    7,291.62x = 31,818,241.67
  5. Step 5: Solve for x
    x = 31,818,241.67/7,291.62
  6. Step 6: Final answer
    x = 4,363.67

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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.