Home / 3,180.08-4,387.46-1,920.66

Finding the Fourth Proportional to 3,180.08, 4,387.46 and 1,920.66

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Solution

The fourth proportional to 3,180.08, 4,387.46 and 1,920.66 is: 2,649.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180.08 : 4,387.46 = 1,920.66 : x
  2. Step 2: Convert to fraction form
    3,180.08/4,387.46 = 1,920.66/x
  3. Step 3: Cross multiply
    3,180.08x = 4,387.46 × 1,920.66
  4. Step 4: Simplify right side
    3,180.08x = 8,426,809.32
  5. Step 5: Solve for x
    x = 8,426,809.32/3,180.08
  6. Step 6: Final answer
    x = 2,649.88

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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.