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Finding the Fourth Proportional to 3,390.72, 4,665.51 and 3,304.86

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Solution

The fourth proportional to 3,390.72, 4,665.51 and 3,304.86 is: 4,547.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.72 : 4,665.51 = 3,304.86 : x
  2. Step 2: Convert to fraction form
    3,390.72/4,665.51 = 3,304.86/x
  3. Step 3: Cross multiply
    3,390.72x = 4,665.51 × 3,304.86
  4. Step 4: Simplify right side
    3,390.72x = 15,418,857.38
  5. Step 5: Solve for x
    x = 15,418,857.38/3,390.72
  6. Step 6: Final answer
    x = 4,547.37

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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.