Home / 2,143.32-3,214.02-1,103.90

Finding the Fourth Proportional to 2,143.32, 3,214.02 and 1,103.90

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Solution

The fourth proportional to 2,143.32, 3,214.02 and 1,103.90 is: 1,655.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.32 : 3,214.02 = 1,103.90 : x
  2. Step 2: Convert to fraction form
    2,143.32/3,214.02 = 1,103.90/x
  3. Step 3: Cross multiply
    2,143.32x = 3,214.02 × 1,103.90
  4. Step 4: Simplify right side
    2,143.32x = 3,547,956.68
  5. Step 5: Solve for x
    x = 3,547,956.68/2,143.32
  6. Step 6: Final answer
    x = 1,655.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.