Home / 6,639.40-9,959.10-5,084.20

Finding the Fourth Proportional to 6,639.40, 9,959.10 and 5,084.20

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Solution

The fourth proportional to 6,639.40, 9,959.10 and 5,084.20 is: 7,626.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.40 : 9,959.10 = 5,084.20 : x
  2. Step 2: Convert to fraction form
    6,639.40/9,959.10 = 5,084.20/x
  3. Step 3: Cross multiply
    6,639.40x = 9,959.10 × 5,084.20
  4. Step 4: Simplify right side
    6,639.40x = 50,634,056.22
  5. Step 5: Solve for x
    x = 50,634,056.22/6,639.40
  6. Step 6: Final answer
    x = 7,626.30

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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.