Home / 2,103.12-3,145.28-1,873.68

Finding the Fourth Proportional to 2,103.12, 3,145.28 and 1,873.68

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Solution

The fourth proportional to 2,103.12, 3,145.28 and 1,873.68 is: 2,802.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,103.12 : 3,145.28 = 1,873.68 : x
  2. Step 2: Convert to fraction form
    2,103.12/3,145.28 = 1,873.68/x
  3. Step 3: Cross multiply
    2,103.12x = 3,145.28 × 1,873.68
  4. Step 4: Simplify right side
    2,103.12x = 5,893,248.23
  5. Step 5: Solve for x
    x = 5,893,248.23/2,103.12
  6. Step 6: Final answer
    x = 2,802.15

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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.