Home / 9,989.20-14,983.80-5,323.60

Finding the Fourth Proportional to 9,989.20, 14,983.80 and 5,323.60

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Solution

The fourth proportional to 9,989.20, 14,983.80 and 5,323.60 is: 7,985.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989.20 : 14,983.80 = 5,323.60 : x
  2. Step 2: Convert to fraction form
    9,989.20/14,983.80 = 5,323.60/x
  3. Step 3: Cross multiply
    9,989.20x = 14,983.80 × 5,323.60
  4. Step 4: Simplify right side
    9,989.20x = 79,767,757.68
  5. Step 5: Solve for x
    x = 79,767,757.68/9,989.20
  6. Step 6: Final answer
    x = 7,985.40

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Similar ratio
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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.