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Finding the Fourth Proportional to 4,955.78, 7,430.91 and 3,397.55

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Solution

The fourth proportional to 4,955.78, 7,430.91 and 3,397.55 is: 5,094.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,955.78 : 7,430.91 = 3,397.55 : x
  2. Step 2: Convert to fraction form
    4,955.78/7,430.91 = 3,397.55/x
  3. Step 3: Cross multiply
    4,955.78x = 7,430.91 × 3,397.55
  4. Step 4: Simplify right side
    4,955.78x = 25,246,838.38
  5. Step 5: Solve for x
    x = 25,246,838.38/4,955.78
  6. Step 6: Final answer
    x = 5,094.42

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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.