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Finding the Fourth Proportional to 2,257.50, 3,386.93 and 959.07

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Solution

The fourth proportional to 2,257.50, 3,386.93 and 959.07 is: 1,438.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,257.50 : 3,386.93 = 959.07 : x
  2. Step 2: Convert to fraction form
    2,257.50/3,386.93 = 959.07/x
  3. Step 3: Cross multiply
    2,257.50x = 3,386.93 × 959.07
  4. Step 4: Simplify right side
    2,257.50x = 3,248,298.16
  5. Step 5: Solve for x
    x = 3,248,298.16/2,257.50
  6. Step 6: Final answer
    x = 1,438.89

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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.