Home / 7,387.80-11,082.78-2,643.60

Finding the Fourth Proportional to 7,387.80, 11,082.78 and 2,643.60

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Solution

The fourth proportional to 7,387.80, 11,082.78 and 2,643.60 is: 3,965.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,387.80 : 11,082.78 = 2,643.60 : x
  2. Step 2: Convert to fraction form
    7,387.80/11,082.78 = 2,643.60/x
  3. Step 3: Cross multiply
    7,387.80x = 11,082.78 × 2,643.60
  4. Step 4: Simplify right side
    7,387.80x = 29,298,437.21
  5. Step 5: Solve for x
    x = 29,298,437.21/7,387.80
  6. Step 6: Final answer
    x = 3,965.79

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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.