Home / 1,613.76-2,416.38-1,306.78

Finding the Fourth Proportional to 1,613.76, 2,416.38 and 1,306.78

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Solution

The fourth proportional to 1,613.76, 2,416.38 and 1,306.78 is: 1,956.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,613.76 : 2,416.38 = 1,306.78 : x
  2. Step 2: Convert to fraction form
    1,613.76/2,416.38 = 1,306.78/x
  3. Step 3: Cross multiply
    1,613.76x = 2,416.38 × 1,306.78
  4. Step 4: Simplify right side
    1,613.76x = 3,157,677.06
  5. Step 5: Solve for x
    x = 3,157,677.06/1,613.76
  6. Step 6: Final answer
    x = 1,956.72

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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.