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Finding the Fourth Proportional to 5,861.68, 8,791.71 and 1,478.87

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Solution

The fourth proportional to 5,861.68, 8,791.71 and 1,478.87 is: 2,218.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,861.68 : 8,791.71 = 1,478.87 : x
  2. Step 2: Convert to fraction form
    5,861.68/8,791.71 = 1,478.87/x
  3. Step 3: Cross multiply
    5,861.68x = 8,791.71 × 1,478.87
  4. Step 4: Simplify right side
    5,861.68x = 13,001,779.63
  5. Step 5: Solve for x
    x = 13,001,779.63/5,861.68
  6. Step 6: Final answer
    x = 2,218.10

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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.