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Finding the Fourth Proportional to 5,391.78, 7,440.58 and 3,001.69

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Solution

The fourth proportional to 5,391.78, 7,440.58 and 3,001.69 is: 4,142.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,391.78 : 7,440.58 = 3,001.69 : x
  2. Step 2: Convert to fraction form
    5,391.78/7,440.58 = 3,001.69/x
  3. Step 3: Cross multiply
    5,391.78x = 7,440.58 × 3,001.69
  4. Step 4: Simplify right side
    5,391.78x = 22,334,296.84
  5. Step 5: Solve for x
    x = 22,334,296.84/5,391.78
  6. Step 6: Final answer
    x = 4,142.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.