Home / 3,927.04-5,419.44-2,158.72

Finding the Fourth Proportional to 3,927.04, 5,419.44 and 2,158.72

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Solution

The fourth proportional to 3,927.04, 5,419.44 and 2,158.72 is: 2,979.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927.04 : 5,419.44 = 2,158.72 : x
  2. Step 2: Convert to fraction form
    3,927.04/5,419.44 = 2,158.72/x
  3. Step 3: Cross multiply
    3,927.04x = 5,419.44 × 2,158.72
  4. Step 4: Simplify right side
    3,927.04x = 11,699,053.52
  5. Step 5: Solve for x
    x = 11,699,053.52/3,927.04
  6. Step 6: Final answer
    x = 2,979.10

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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.