Home / 5,227.52-7,213.08-2,989.40

Finding the Fourth Proportional to 5,227.52, 7,213.08 and 2,989.40

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Solution

The fourth proportional to 5,227.52, 7,213.08 and 2,989.40 is: 4,124.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,227.52 : 7,213.08 = 2,989.40 : x
  2. Step 2: Convert to fraction form
    5,227.52/7,213.08 = 2,989.40/x
  3. Step 3: Cross multiply
    5,227.52x = 7,213.08 × 2,989.40
  4. Step 4: Simplify right side
    5,227.52x = 21,562,781.35
  5. Step 5: Solve for x
    x = 21,562,781.35/5,227.52
  6. Step 6: Final answer
    x = 4,124.86

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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.