Home / 2,231.04-3,345.48-691.68

Finding the Fourth Proportional to 2,231.04, 3,345.48 and 691.68

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Solution

The fourth proportional to 2,231.04, 3,345.48 and 691.68 is: 1,037.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,231.04 : 3,345.48 = 691.68 : x
  2. Step 2: Convert to fraction form
    2,231.04/3,345.48 = 691.68/x
  3. Step 3: Cross multiply
    2,231.04x = 3,345.48 × 691.68
  4. Step 4: Simplify right side
    2,231.04x = 2,314,001.61
  5. Step 5: Solve for x
    x = 2,314,001.61/2,231.04
  6. Step 6: Final answer
    x = 1,037.19

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1.5x scale

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.