Home / 1,681.61-2,520.55-1,269.41

Finding the Fourth Proportional to 1,681.61, 2,520.55 and 1,269.41

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Solution

The fourth proportional to 1,681.61, 2,520.55 and 1,269.41 is: 1,902.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681.61 : 2,520.55 = 1,269.41 : x
  2. Step 2: Convert to fraction form
    1,681.61/2,520.55 = 1,269.41/x
  3. Step 3: Cross multiply
    1,681.61x = 2,520.55 × 1,269.41
  4. Step 4: Simplify right side
    1,681.61x = 3,199,611.38
  5. Step 5: Solve for x
    x = 3,199,611.38/1,681.61
  6. Step 6: Final answer
    x = 1,902.71

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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.