Home / 3,959.48-5,458.38-2,776.88

Finding the Fourth Proportional to 3,959.48, 5,458.38 and 2,776.88

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Solution

The fourth proportional to 3,959.48, 5,458.38 and 2,776.88 is: 3,828.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,959.48 : 5,458.38 = 2,776.88 : x
  2. Step 2: Convert to fraction form
    3,959.48/5,458.38 = 2,776.88/x
  3. Step 3: Cross multiply
    3,959.48x = 5,458.38 × 2,776.88
  4. Step 4: Simplify right side
    3,959.48x = 15,157,266.25
  5. Step 5: Solve for x
    x = 15,157,266.25/3,959.48
  6. Step 6: Final answer
    x = 3,828.10

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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.