Home / 6,247.60-8,617.68-4,920.76

Finding the Fourth Proportional to 6,247.60, 8,617.68 and 4,920.76

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Solution

The fourth proportional to 6,247.60, 8,617.68 and 4,920.76 is: 6,787.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,247.60 : 8,617.68 = 4,920.76 : x
  2. Step 2: Convert to fraction form
    6,247.60/8,617.68 = 4,920.76/x
  3. Step 3: Cross multiply
    6,247.60x = 8,617.68 × 4,920.76
  4. Step 4: Simplify right side
    6,247.60x = 42,405,535.04
  5. Step 5: Solve for x
    x = 42,405,535.04/6,247.60
  6. Step 6: Final answer
    x = 6,787.49

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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.