Home / 5,118.20-7,677.31-1,831.10

Finding the Fourth Proportional to 5,118.20, 7,677.31 and 1,831.10

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Solution

The fourth proportional to 5,118.20, 7,677.31 and 1,831.10 is: 2,746.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.20 : 7,677.31 = 1,831.10 : x
  2. Step 2: Convert to fraction form
    5,118.20/7,677.31 = 1,831.10/x
  3. Step 3: Cross multiply
    5,118.20x = 7,677.31 × 1,831.10
  4. Step 4: Simplify right side
    5,118.20x = 14,057,922.34
  5. Step 5: Solve for x
    x = 14,057,922.34/5,118.20
  6. Step 6: Final answer
    x = 2,746.65

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1.5x scale

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.