Home / 2,913.07-4,020.12-1,586.80

Finding the Fourth Proportional to 2,913.07, 4,020.12 and 1,586.80

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Solution

The fourth proportional to 2,913.07, 4,020.12 and 1,586.80 is: 2,189.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.07 : 4,020.12 = 1,586.80 : x
  2. Step 2: Convert to fraction form
    2,913.07/4,020.12 = 1,586.80/x
  3. Step 3: Cross multiply
    2,913.07x = 4,020.12 × 1,586.80
  4. Step 4: Simplify right side
    2,913.07x = 6,379,126.42
  5. Step 5: Solve for x
    x = 6,379,126.42/2,913.07
  6. Step 6: Final answer
    x = 2,189.83

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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.