Home / 4,987.20-6,885.20-3,310.87

Finding the Fourth Proportional to 4,987.20, 6,885.20 and 3,310.87

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Solution

The fourth proportional to 4,987.20, 6,885.20 and 3,310.87 is: 4,570.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,987.20 : 6,885.20 = 3,310.87 : x
  2. Step 2: Convert to fraction form
    4,987.20/6,885.20 = 3,310.87/x
  3. Step 3: Cross multiply
    4,987.20x = 6,885.20 × 3,310.87
  4. Step 4: Simplify right side
    4,987.20x = 22,796,002.12
  5. Step 5: Solve for x
    x = 22,796,002.12/4,987.20
  6. Step 6: Final answer
    x = 4,570.90

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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.