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Finding the Fourth Proportional to 2,658.61, 3,668.65 and 1,479.66

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Solution

The fourth proportional to 2,658.61, 3,668.65 and 1,479.66 is: 2,041.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,658.61 : 3,668.65 = 1,479.66 : x
  2. Step 2: Convert to fraction form
    2,658.61/3,668.65 = 1,479.66/x
  3. Step 3: Cross multiply
    2,658.61x = 3,668.65 × 1,479.66
  4. Step 4: Simplify right side
    2,658.61x = 5,428,354.66
  5. Step 5: Solve for x
    x = 5,428,354.66/2,658.61
  6. Step 6: Final answer
    x = 2,041.80

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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.