Home / 1,631.29-2,251.14-959.09

Finding the Fourth Proportional to 1,631.29, 2,251.14 and 959.09

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Solution

The fourth proportional to 1,631.29, 2,251.14 and 959.09 is: 1,323.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,631.29 : 2,251.14 = 959.09 : x
  2. Step 2: Convert to fraction form
    1,631.29/2,251.14 = 959.09/x
  3. Step 3: Cross multiply
    1,631.29x = 2,251.14 × 959.09
  4. Step 4: Simplify right side
    1,631.29x = 2,159,049.07
  5. Step 5: Solve for x
    x = 2,159,049.07/1,631.29
  6. Step 6: Final answer
    x = 1,323.52

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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.