Home / 4,981.28-6,872.90-3,210.75

Finding the Fourth Proportional to 4,981.28, 6,872.90 and 3,210.75

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Solution

The fourth proportional to 4,981.28, 6,872.90 and 3,210.75 is: 4,430.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,981.28 : 6,872.90 = 3,210.75 : x
  2. Step 2: Convert to fraction form
    4,981.28/6,872.90 = 3,210.75/x
  3. Step 3: Cross multiply
    4,981.28x = 6,872.90 × 3,210.75
  4. Step 4: Simplify right side
    4,981.28x = 22,067,147.62
  5. Step 5: Solve for x
    x = 22,067,147.62/4,981.28
  6. Step 6: Final answer
    x = 4,430.02

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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.