Home / 5,158.89-7,741.68-1,871.70

Finding the Fourth Proportional to 5,158.89, 7,741.68 and 1,871.70

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Solution

The fourth proportional to 5,158.89, 7,741.68 and 1,871.70 is: 2,808.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,158.89 : 7,741.68 = 1,871.70 : x
  2. Step 2: Convert to fraction form
    5,158.89/7,741.68 = 1,871.70/x
  3. Step 3: Cross multiply
    5,158.89x = 7,741.68 × 1,871.70
  4. Step 4: Simplify right side
    5,158.89x = 14,490,102.46
  5. Step 5: Solve for x
    x = 14,490,102.46/5,158.89
  6. Step 6: Final answer
    x = 2,808.76

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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.