Home / 4,986.29-6,880.49-2,861.72

Finding the Fourth Proportional to 4,986.29, 6,880.49 and 2,861.72

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Solution

The fourth proportional to 4,986.29, 6,880.49 and 2,861.72 is: 3,948.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,986.29 : 6,880.49 = 2,861.72 : x
  2. Step 2: Convert to fraction form
    4,986.29/6,880.49 = 2,861.72/x
  3. Step 3: Cross multiply
    4,986.29x = 6,880.49 × 2,861.72
  4. Step 4: Simplify right side
    4,986.29x = 19,689,987.13
  5. Step 5: Solve for x
    x = 19,689,987.13/4,986.29
  6. Step 6: Final answer
    x = 3,948.83

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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.