Home / 2,913.20-4,020.18-1,586.87

Finding the Fourth Proportional to 2,913.20, 4,020.18 and 1,586.87

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Solution

The fourth proportional to 2,913.20, 4,020.18 and 1,586.87 is: 2,189.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.20 : 4,020.18 = 1,586.87 : x
  2. Step 2: Convert to fraction form
    2,913.20/4,020.18 = 1,586.87/x
  3. Step 3: Cross multiply
    2,913.20x = 4,020.18 × 1,586.87
  4. Step 4: Simplify right side
    2,913.20x = 6,379,503.04
  5. Step 5: Solve for x
    x = 6,379,503.04/2,913.20
  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.