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Finding the Fourth Proportional to 3,965.70, 5,470.95 and 2,392.89

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Solution

The fourth proportional to 3,965.70, 5,470.95 and 2,392.89 is: 3,301.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,965.70 : 5,470.95 = 2,392.89 : x
  2. Step 2: Convert to fraction form
    3,965.70/5,470.95 = 2,392.89/x
  3. Step 3: Cross multiply
    3,965.70x = 5,470.95 × 2,392.89
  4. Step 4: Simplify right side
    3,965.70x = 13,091,381.55
  5. Step 5: Solve for x
    x = 13,091,381.55/3,965.70
  6. Step 6: Final answer
    x = 3,301.15

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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.