Home / 4,987.80-6,882.93-2,861.87

Finding the Fourth Proportional to 4,987.80, 6,882.93 and 2,861.87

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Solution

The fourth proportional to 4,987.80, 6,882.93 and 2,861.87 is: 3,949.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,987.80 : 6,882.93 = 2,861.87 : x
  2. Step 2: Convert to fraction form
    4,987.80/6,882.93 = 2,861.87/x
  3. Step 3: Cross multiply
    4,987.80x = 6,882.93 × 2,861.87
  4. Step 4: Simplify right side
    4,987.80x = 19,698,016.46
  5. Step 5: Solve for x
    x = 19,698,016.46/4,987.80
  6. Step 6: Final answer
    x = 3,949.24

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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.