Home / 2,861.60-3,948.48-2,418.56

Finding the Fourth Proportional to 2,861.60, 3,948.48 and 2,418.56

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Solution

The fourth proportional to 2,861.60, 3,948.48 and 2,418.56 is: 3,337.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861.60 : 3,948.48 = 2,418.56 : x
  2. Step 2: Convert to fraction form
    2,861.60/3,948.48 = 2,418.56/x
  3. Step 3: Cross multiply
    2,861.60x = 3,948.48 × 2,418.56
  4. Step 4: Simplify right side
    2,861.60x = 9,549,635.79
  5. Step 5: Solve for x
    x = 9,549,635.79/2,861.60
  6. Step 6: Final answer
    x = 3,337.17

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1.5x scale

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.