Home / 3,146.68-4,342.40-1,820.36

Finding the Fourth Proportional to 3,146.68, 4,342.40 and 1,820.36

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Solution

The fourth proportional to 3,146.68, 4,342.40 and 1,820.36 is: 2,512.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,146.68 : 4,342.40 = 1,820.36 : x
  2. Step 2: Convert to fraction form
    3,146.68/4,342.40 = 1,820.36/x
  3. Step 3: Cross multiply
    3,146.68x = 4,342.40 × 1,820.36
  4. Step 4: Simplify right side
    3,146.68x = 7,904,731.26
  5. Step 5: Solve for x
    x = 7,904,731.26/3,146.68
  6. Step 6: Final answer
    x = 2,512.09

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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.