Home / 2,670.07-4,002.42-913.87

Finding the Fourth Proportional to 2,670.07, 4,002.42 and 913.87

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Solution

The fourth proportional to 2,670.07, 4,002.42 and 913.87 is: 1,369.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,670.07 : 4,002.42 = 913.87 : x
  2. Step 2: Convert to fraction form
    2,670.07/4,002.42 = 913.87/x
  3. Step 3: Cross multiply
    2,670.07x = 4,002.42 × 913.87
  4. Step 4: Simplify right side
    2,670.07x = 3,657,691.57
  5. Step 5: Solve for x
    x = 3,657,691.57/2,670.07
  6. Step 6: Final answer
    x = 1,369.89

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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.