Home / 3,127.90-4,318.23-2,081.50

Finding the Fourth Proportional to 3,127.90, 4,318.23 and 2,081.50

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Solution

The fourth proportional to 3,127.90, 4,318.23 and 2,081.50 is: 2,873.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.90 : 4,318.23 = 2,081.50 : x
  2. Step 2: Convert to fraction form
    3,127.90/4,318.23 = 2,081.50/x
  3. Step 3: Cross multiply
    3,127.90x = 4,318.23 × 2,081.50
  4. Step 4: Simplify right side
    3,127.90x = 8,988,395.75
  5. Step 5: Solve for x
    x = 8,988,395.75/3,127.90
  6. Step 6: Final answer
    x = 2,873.62

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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.