Home / 3,116.80-4,302.16-2,000.72

Finding the Fourth Proportional to 3,116.80, 4,302.16 and 2,000.72

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Solution

The fourth proportional to 3,116.80, 4,302.16 and 2,000.72 is: 2,761.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,116.80 : 4,302.16 = 2,000.72 : x
  2. Step 2: Convert to fraction form
    3,116.80/4,302.16 = 2,000.72/x
  3. Step 3: Cross multiply
    3,116.80x = 4,302.16 × 2,000.72
  4. Step 4: Simplify right side
    3,116.80x = 8,607,417.56
  5. Step 5: Solve for x
    x = 8,607,417.56/3,116.80
  6. Step 6: Final answer
    x = 2,761.62

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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.