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Finding the Fourth Proportional to 7,125.62, 9,833.34 and 3,981.81

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Solution

The fourth proportional to 7,125.62, 9,833.34 and 3,981.81 is: 5,494.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,125.62 : 9,833.34 = 3,981.81 : x
  2. Step 2: Convert to fraction form
    7,125.62/9,833.34 = 3,981.81/x
  3. Step 3: Cross multiply
    7,125.62x = 9,833.34 × 3,981.81
  4. Step 4: Simplify right side
    7,125.62x = 39,154,491.55
  5. Step 5: Solve for x
    x = 39,154,491.55/7,125.62
  6. Step 6: Final answer
    x = 5,494.89

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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.