Home / 2,378.24-3,566.40-991.52

Finding the Fourth Proportional to 2,378.24, 3,566.40 and 991.52

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Solution

The fourth proportional to 2,378.24, 3,566.40 and 991.52 is: 1,486.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,378.24 : 3,566.40 = 991.52 : x
  2. Step 2: Convert to fraction form
    2,378.24/3,566.40 = 991.52/x
  3. Step 3: Cross multiply
    2,378.24x = 3,566.40 × 991.52
  4. Step 4: Simplify right side
    2,378.24x = 3,536,156.93
  5. Step 5: Solve for x
    x = 3,536,156.93/2,378.24
  6. Step 6: Final answer
    x = 1,486.88

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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.