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Finding the Fourth Proportional to 2,169, 3,253.83 and 707.82

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Solution

The fourth proportional to 2,169, 3,253.83 and 707.82 is: 1,061.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,169 : 3,253.83 = 707.82 : x
  2. Step 2: Convert to fraction form
    2,169/3,253.83 = 707.82/x
  3. Step 3: Cross multiply
    2,169x = 3,253.83 × 707.82
  4. Step 4: Simplify right side
    2,169x = 2,303,125.95
  5. Step 5: Solve for x
    x = 2,303,125.95/2,169
  6. Step 6: Final answer
    x = 1,061.84

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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.