Home / 2,776.40-3,833.14-2,643.20

Finding the Fourth Proportional to 2,776.40, 3,833.14 and 2,643.20

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Solution

The fourth proportional to 2,776.40, 3,833.14 and 2,643.20 is: 3,649.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,776.40 : 3,833.14 = 2,643.20 : x
  2. Step 2: Convert to fraction form
    2,776.40/3,833.14 = 2,643.20/x
  3. Step 3: Cross multiply
    2,776.40x = 3,833.14 × 2,643.20
  4. Step 4: Simplify right side
    2,776.40x = 10,131,755.65
  5. Step 5: Solve for x
    x = 10,131,755.65/2,776.40
  6. Step 6: Final answer
    x = 3,649.24

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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.