Home / 2,861.39-3,948.68-1,602.45

Finding the Fourth Proportional to 2,861.39, 3,948.68 and 1,602.45

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Solution

The fourth proportional to 2,861.39, 3,948.68 and 1,602.45 is: 2,211.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861.39 : 3,948.68 = 1,602.45 : x
  2. Step 2: Convert to fraction form
    2,861.39/3,948.68 = 1,602.45/x
  3. Step 3: Cross multiply
    2,861.39x = 3,948.68 × 1,602.45
  4. Step 4: Simplify right side
    2,861.39x = 6,327,566.27
  5. Step 5: Solve for x
    x = 6,327,566.27/2,861.39
  6. Step 6: Final answer
    x = 2,211.36

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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.