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Finding the Fourth Proportional to 2,695.60, 4,043.40 and 1,658.80

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Solution

The fourth proportional to 2,695.60, 4,043.40 and 1,658.80 is: 2,488.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,695.60 : 4,043.40 = 1,658.80 : x
  2. Step 2: Convert to fraction form
    2,695.60/4,043.40 = 1,658.80/x
  3. Step 3: Cross multiply
    2,695.60x = 4,043.40 × 1,658.80
  4. Step 4: Simplify right side
    2,695.60x = 6,707,191.92
  5. Step 5: Solve for x
    x = 6,707,191.92/2,695.60
  6. Step 6: Final answer
    x = 2,488.20

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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.