Home / 2,931.29-4,045.14-1,586.87

Finding the Fourth Proportional to 2,931.29, 4,045.14 and 1,586.87

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Solution

The fourth proportional to 2,931.29, 4,045.14 and 1,586.87 is: 2,189.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.29 : 4,045.14 = 1,586.87 : x
  2. Step 2: Convert to fraction form
    2,931.29/4,045.14 = 1,586.87/x
  3. Step 3: Cross multiply
    2,931.29x = 4,045.14 × 1,586.87
  4. Step 4: Simplify right side
    2,931.29x = 6,419,121.42
  5. Step 5: Solve for x
    x = 6,419,121.42/2,931.29
  6. Step 6: Final answer
    x = 2,189.86

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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.