Home / 6,982.60-9,631.70-4,989.71

Finding the Fourth Proportional to 6,982.60, 9,631.70 and 4,989.71

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Solution

The fourth proportional to 6,982.60, 9,631.70 and 4,989.71 is: 6,882.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,982.60 : 9,631.70 = 4,989.71 : x
  2. Step 2: Convert to fraction form
    6,982.60/9,631.70 = 4,989.71/x
  3. Step 3: Cross multiply
    6,982.60x = 9,631.70 × 4,989.71
  4. Step 4: Simplify right side
    6,982.60x = 48,059,389.81
  5. Step 5: Solve for x
    x = 48,059,389.81/6,982.60
  6. Step 6: Final answer
    x = 6,882.74

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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.