Home / 6,621.20-9,931.80-6,329.60

Finding the Fourth Proportional to 6,621.20, 9,931.80 and 6,329.60

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Solution

The fourth proportional to 6,621.20, 9,931.80 and 6,329.60 is: 9,494.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.20 : 9,931.80 = 6,329.60 : x
  2. Step 2: Convert to fraction form
    6,621.20/9,931.80 = 6,329.60/x
  3. Step 3: Cross multiply
    6,621.20x = 9,931.80 × 6,329.60
  4. Step 4: Simplify right side
    6,621.20x = 62,864,321.28
  5. Step 5: Solve for x
    x = 62,864,321.28/6,621.20
  6. Step 6: Final answer
    x = 9,494.40

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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.