Home / 1,685.00-2,531.55-1,591.75

Finding the Fourth Proportional to 1,685.00, 2,531.55 and 1,591.75

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Solution

The fourth proportional to 1,685.00, 2,531.55 and 1,591.75 is: 2,391.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,685.00 : 2,531.55 = 1,591.75 : x
  2. Step 2: Convert to fraction form
    1,685.00/2,531.55 = 1,591.75/x
  3. Step 3: Cross multiply
    1,685.00x = 2,531.55 × 1,591.75
  4. Step 4: Simplify right side
    1,685.00x = 4,029,603.85
  5. Step 5: Solve for x
    x = 4,029,603.85/1,685.00
  6. Step 6: Final answer
    x = 2,391.45

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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.