Home / 2,756.47-3,805.40-2,125.61

Finding the Fourth Proportional to 2,756.47, 3,805.40 and 2,125.61

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Solution

The fourth proportional to 2,756.47, 3,805.40 and 2,125.61 is: 2,934.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,756.47 : 3,805.40 = 2,125.61 : x
  2. Step 2: Convert to fraction form
    2,756.47/3,805.40 = 2,125.61/x
  3. Step 3: Cross multiply
    2,756.47x = 3,805.40 × 2,125.61
  4. Step 4: Simplify right side
    2,756.47x = 8,088,796.29
  5. Step 5: Solve for x
    x = 8,088,796.29/2,756.47
  6. Step 6: Final answer
    x = 2,934.48

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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.