Home / 3,154.55-4,726.20-1,921.32

Finding the Fourth Proportional to 3,154.55, 4,726.20 and 1,921.32

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Solution

The fourth proportional to 3,154.55, 4,726.20 and 1,921.32 is: 2,878.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,154.55 : 4,726.20 = 1,921.32 : x
  2. Step 2: Convert to fraction form
    3,154.55/4,726.20 = 1,921.32/x
  3. Step 3: Cross multiply
    3,154.55x = 4,726.20 × 1,921.32
  4. Step 4: Simplify right side
    3,154.55x = 9,080,542.58
  5. Step 5: Solve for x
    x = 9,080,542.58/3,154.55
  6. Step 6: Final answer
    x = 2,878.56

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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.