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Finding the Fourth Proportional to 4,468.68, 6,702.66 and 1,390.68

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Solution

The fourth proportional to 4,468.68, 6,702.66 and 1,390.68 is: 2,085.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,468.68 : 6,702.66 = 1,390.68 : x
  2. Step 2: Convert to fraction form
    4,468.68/6,702.66 = 1,390.68/x
  3. Step 3: Cross multiply
    4,468.68x = 6,702.66 × 1,390.68
  4. Step 4: Simplify right side
    4,468.68x = 9,321,255.21
  5. Step 5: Solve for x
    x = 9,321,255.21/4,468.68
  6. Step 6: Final answer
    x = 2,085.91

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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.