Home / 3,118.72-4,679.28-1,887.04

Finding the Fourth Proportional to 3,118.72, 4,679.28 and 1,887.04

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Solution

The fourth proportional to 3,118.72, 4,679.28 and 1,887.04 is: 2,831.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.72 : 4,679.28 = 1,887.04 : x
  2. Step 2: Convert to fraction form
    3,118.72/4,679.28 = 1,887.04/x
  3. Step 3: Cross multiply
    3,118.72x = 4,679.28 × 1,887.04
  4. Step 4: Simplify right side
    3,118.72x = 8,829,988.53
  5. Step 5: Solve for x
    x = 8,829,988.53/3,118.72
  6. Step 6: Final answer
    x = 2,831.29

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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.