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Finding the Fourth Proportional to 7,159.81, 10,740.45 and 2,479.81

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Solution

The fourth proportional to 7,159.81, 10,740.45 and 2,479.81 is: 3,719.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,159.81 : 10,740.45 = 2,479.81 : x
  2. Step 2: Convert to fraction form
    7,159.81/10,740.45 = 2,479.81/x
  3. Step 3: Cross multiply
    7,159.81x = 10,740.45 × 2,479.81
  4. Step 4: Simplify right side
    7,159.81x = 26,634,275.31
  5. Step 5: Solve for x
    x = 26,634,275.31/7,159.81
  6. Step 6: Final answer
    x = 3,719.97

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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.