Home / 2,799.90-3,864.10-1,541.20

Finding the Fourth Proportional to 2,799.90, 3,864.10 and 1,541.20

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Solution

The fourth proportional to 2,799.90, 3,864.10 and 1,541.20 is: 2,126.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,799.90 : 3,864.10 = 1,541.20 : x
  2. Step 2: Convert to fraction form
    2,799.90/3,864.10 = 1,541.20/x
  3. Step 3: Cross multiply
    2,799.90x = 3,864.10 × 1,541.20
  4. Step 4: Simplify right side
    2,799.90x = 5,955,331.60
  5. Step 5: Solve for x
    x = 5,955,331.60/2,799.90
  6. Step 6: Final answer
    x = 2,126.98

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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.