Home / 5,118.10-7,677.15-1,831.30

Finding the Fourth Proportional to 5,118.10, 7,677.15 and 1,831.30

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Solution

The fourth proportional to 5,118.10, 7,677.15 and 1,831.30 is: 2,746.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.10 : 7,677.15 = 1,831.30 : x
  2. Step 2: Convert to fraction form
    5,118.10/7,677.15 = 1,831.30/x
  3. Step 3: Cross multiply
    5,118.10x = 7,677.15 × 1,831.30
  4. Step 4: Simplify right side
    5,118.10x = 14,059,164.80
  5. Step 5: Solve for x
    x = 14,059,164.80/5,118.10
  6. Step 6: Final answer
    x = 2,746.95

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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.