Home / 3,386.80-4,672.56-2,678.86

Finding the Fourth Proportional to 3,386.80, 4,672.56 and 2,678.86

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Solution

The fourth proportional to 3,386.80, 4,672.56 and 2,678.86 is: 3,695.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,386.80 : 4,672.56 = 2,678.86 : x
  2. Step 2: Convert to fraction form
    3,386.80/4,672.56 = 2,678.86/x
  3. Step 3: Cross multiply
    3,386.80x = 4,672.56 × 2,678.86
  4. Step 4: Simplify right side
    3,386.80x = 12,517,134.08
  5. Step 5: Solve for x
    x = 12,517,134.08/3,386.80
  6. Step 6: Final answer
    x = 3,695.86

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1.5x scale

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.