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Finding the Fourth Proportional to 5,201.88, 7,803.49 and 1,915.01

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Solution

The fourth proportional to 5,201.88, 7,803.49 and 1,915.01 is: 2,872.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,201.88 : 7,803.49 = 1,915.01 : x
  2. Step 2: Convert to fraction form
    5,201.88/7,803.49 = 1,915.01/x
  3. Step 3: Cross multiply
    5,201.88x = 7,803.49 × 1,915.01
  4. Step 4: Simplify right side
    5,201.88x = 14,943,761.38
  5. Step 5: Solve for x
    x = 14,943,761.38/5,201.88
  6. Step 6: Final answer
    x = 2,872.76

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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.