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Finding the Fourth Proportional to 4,390.64, 6,065 and 3,512.72

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Solution

The fourth proportional to 4,390.64, 6,065 and 3,512.72 is: 4,852.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,390.64 : 6,065 = 3,512.72 : x
  2. Step 2: Convert to fraction form
    4,390.64/6,065 = 3,512.72/x
  3. Step 3: Cross multiply
    4,390.64x = 6,065 × 3,512.72
  4. Step 4: Simplify right side
    4,390.64x = 21,304,646.80
  5. Step 5: Solve for x
    x = 21,304,646.80/4,390.64
  6. Step 6: Final answer
    x = 4,852.29

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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.