Home / 2,176.17-3,002.11-1,291.47

Finding the Fourth Proportional to 2,176.17, 3,002.11 and 1,291.47

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Solution

The fourth proportional to 2,176.17, 3,002.11 and 1,291.47 is: 1,781.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,176.17 : 3,002.11 = 1,291.47 : x
  2. Step 2: Convert to fraction form
    2,176.17/3,002.11 = 1,291.47/x
  3. Step 3: Cross multiply
    2,176.17x = 3,002.11 × 1,291.47
  4. Step 4: Simplify right side
    2,176.17x = 3,877,135.00
  5. Step 5: Solve for x
    x = 3,877,135.00/2,176.17
  6. Step 6: Final answer
    x = 1,781.63

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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.