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Finding the Fourth Proportional to 2,084.70, 3,125.95 and 697.53

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Solution

The fourth proportional to 2,084.70, 3,125.95 and 697.53 is: 1,045.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,084.70 : 3,125.95 = 697.53 : x
  2. Step 2: Convert to fraction form
    2,084.70/3,125.95 = 697.53/x
  3. Step 3: Cross multiply
    2,084.70x = 3,125.95 × 697.53
  4. Step 4: Simplify right side
    2,084.70x = 2,180,426.53
  5. Step 5: Solve for x
    x = 2,180,426.53/2,084.70
  6. Step 6: Final answer
    x = 1,045.92

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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.