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Finding the Fourth Proportional to 5,040.78, 7,561.16 and 1,343.01

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Solution

The fourth proportional to 5,040.78, 7,561.16 and 1,343.01 is: 2,014.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,040.78 : 7,561.16 = 1,343.01 : x
  2. Step 2: Convert to fraction form
    5,040.78/7,561.16 = 1,343.01/x
  3. Step 3: Cross multiply
    5,040.78x = 7,561.16 × 1,343.01
  4. Step 4: Simplify right side
    5,040.78x = 10,154,713.49
  5. Step 5: Solve for x
    x = 10,154,713.49/5,040.78
  6. Step 6: Final answer
    x = 2,014.51

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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.