Home / 3,118.54-4,677.38-1,386.76

Finding the Fourth Proportional to 3,118.54, 4,677.38 and 1,386.76

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Solution

The fourth proportional to 3,118.54, 4,677.38 and 1,386.76 is: 2,079.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.54 : 4,677.38 = 1,386.76 : x
  2. Step 2: Convert to fraction form
    3,118.54/4,677.38 = 1,386.76/x
  3. Step 3: Cross multiply
    3,118.54x = 4,677.38 × 1,386.76
  4. Step 4: Simplify right side
    3,118.54x = 6,486,403.49
  5. Step 5: Solve for x
    x = 6,486,403.49/3,118.54
  6. Step 6: Final answer
    x = 2,079.95

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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.