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Finding the Fourth Proportional to 2,861.51, 3,948.56 and 1,602.39

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Solution

The fourth proportional to 2,861.51, 3,948.56 and 1,602.39 is: 2,211.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861.51 : 3,948.56 = 1,602.39 : x
  2. Step 2: Convert to fraction form
    2,861.51/3,948.56 = 1,602.39/x
  3. Step 3: Cross multiply
    2,861.51x = 3,948.56 × 1,602.39
  4. Step 4: Simplify right side
    2,861.51x = 6,327,129.05
  5. Step 5: Solve for x
    x = 6,327,129.05/2,861.51
  6. Step 6: Final answer
    x = 2,211.12

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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.