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Finding the Fourth Proportional to 2,695.70, 4,020.86 and 2,613.70

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Solution

The fourth proportional to 2,695.70, 4,020.86 and 2,613.70 is: 3,898.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,695.70 : 4,020.86 = 2,613.70 : x
  2. Step 2: Convert to fraction form
    2,695.70/4,020.86 = 2,613.70/x
  3. Step 3: Cross multiply
    2,695.70x = 4,020.86 × 2,613.70
  4. Step 4: Simplify right side
    2,695.70x = 10,509,321.78
  5. Step 5: Solve for x
    x = 10,509,321.78/2,695.70
  6. Step 6: Final answer
    x = 3,898.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.