Home / 4,989.64-7,486.08-2,392.78

Finding the Fourth Proportional to 4,989.64, 7,486.08 and 2,392.78

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Solution

The fourth proportional to 4,989.64, 7,486.08 and 2,392.78 is: 3,589.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,989.64 : 7,486.08 = 2,392.78 : x
  2. Step 2: Convert to fraction form
    4,989.64/7,486.08 = 2,392.78/x
  3. Step 3: Cross multiply
    4,989.64x = 7,486.08 × 2,392.78
  4. Step 4: Simplify right side
    4,989.64x = 17,912,542.50
  5. Step 5: Solve for x
    x = 17,912,542.50/4,989.64
  6. Step 6: Final answer
    x = 3,589.95

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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.