Home / 2,265.10-3,129.40-2,142.06

Finding the Fourth Proportional to 2,265.10, 3,129.40 and 2,142.06

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Solution

The fourth proportional to 2,265.10, 3,129.40 and 2,142.06 is: 2,959.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,265.10 : 3,129.40 = 2,142.06 : x
  2. Step 2: Convert to fraction form
    2,265.10/3,129.40 = 2,142.06/x
  3. Step 3: Cross multiply
    2,265.10x = 3,129.40 × 2,142.06
  4. Step 4: Simplify right side
    2,265.10x = 6,703,362.56
  5. Step 5: Solve for x
    x = 6,703,362.56/2,265.10
  6. Step 6: Final answer
    x = 2,959.41

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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.