Home / 2,057.18-2,839.20-1,310.90

Finding the Fourth Proportional to 2,057.18, 2,839.20 and 1,310.90

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Solution

The fourth proportional to 2,057.18, 2,839.20 and 1,310.90 is: 1,809.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,057.18 : 2,839.20 = 1,310.90 : x
  2. Step 2: Convert to fraction form
    2,057.18/2,839.20 = 1,310.90/x
  3. Step 3: Cross multiply
    2,057.18x = 2,839.20 × 1,310.90
  4. Step 4: Simplify right side
    2,057.18x = 3,721,907.28
  5. Step 5: Solve for x
    x = 3,721,907.28/2,057.18
  6. Step 6: Final answer
    x = 1,809.23

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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.