Home / 3,127.90-4,315.24-2,066.20

Finding the Fourth Proportional to 3,127.90, 4,315.24 and 2,066.20

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Solution

The fourth proportional to 3,127.90, 4,315.24 and 2,066.20 is: 2,850.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.90 : 4,315.24 = 2,066.20 : x
  2. Step 2: Convert to fraction form
    3,127.90/4,315.24 = 2,066.20/x
  3. Step 3: Cross multiply
    3,127.90x = 4,315.24 × 2,066.20
  4. Step 4: Simplify right side
    3,127.90x = 8,916,148.89
  5. Step 5: Solve for x
    x = 8,916,148.89/3,127.90
  6. Step 6: Final answer
    x = 2,850.52

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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.