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Finding the Fourth Proportional to 4,397.80, 6,071.80 and 3,924.89

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Solution

The fourth proportional to 4,397.80, 6,071.80 and 3,924.89 is: 5,418.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,397.80 : 6,071.80 = 3,924.89 : x
  2. Step 2: Convert to fraction form
    4,397.80/6,071.80 = 3,924.89/x
  3. Step 3: Cross multiply
    4,397.80x = 6,071.80 × 3,924.89
  4. Step 4: Simplify right side
    4,397.80x = 23,831,097.12
  5. Step 5: Solve for x
    x = 23,831,097.12/4,397.80
  6. Step 6: Final answer
    x = 5,418.87

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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.