Home / 7,337.20-10,989.60-4,712.80

Finding the Fourth Proportional to 7,337.20, 10,989.60 and 4,712.80

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Solution

The fourth proportional to 7,337.20, 10,989.60 and 4,712.80 is: 7,058.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,337.20 : 10,989.60 = 4,712.80 : x
  2. Step 2: Convert to fraction form
    7,337.20/10,989.60 = 4,712.80/x
  3. Step 3: Cross multiply
    7,337.20x = 10,989.60 × 4,712.80
  4. Step 4: Simplify right side
    7,337.20x = 51,791,786.88
  5. Step 5: Solve for x
    x = 51,791,786.88/7,337.20
  6. Step 6: Final answer
    x = 7,058.79

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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.