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Finding the Fourth Proportional to 5,877.89, 8,817.40 and 1,717.80

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Solution

The fourth proportional to 5,877.89, 8,817.40 and 1,717.80 is: 2,576.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,877.89 : 8,817.40 = 1,717.80 : x
  2. Step 2: Convert to fraction form
    5,877.89/8,817.40 = 1,717.80/x
  3. Step 3: Cross multiply
    5,877.89x = 8,817.40 × 1,717.80
  4. Step 4: Simplify right side
    5,877.89x = 15,146,529.72
  5. Step 5: Solve for x
    x = 15,146,529.72/5,877.89
  6. Step 6: Final answer
    x = 2,576.87

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1.5x scale

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.