Home / 2,800.75-3,865.13-1,541.74

Finding the Fourth Proportional to 2,800.75, 3,865.13 and 1,541.74

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Solution

The fourth proportional to 2,800.75, 3,865.13 and 1,541.74 is: 2,127.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800.75 : 3,865.13 = 1,541.74 : x
  2. Step 2: Convert to fraction form
    2,800.75/3,865.13 = 1,541.74/x
  3. Step 3: Cross multiply
    2,800.75x = 3,865.13 × 1,541.74
  4. Step 4: Simplify right side
    2,800.75x = 5,959,017.82
  5. Step 5: Solve for x
    x = 5,959,017.82/2,800.75
  6. Step 6: Final answer
    x = 2,127.65

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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.