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Finding the Fourth Proportional to 5,436.78, 7,502.79 and 2,952.78

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Solution

The fourth proportional to 5,436.78, 7,502.79 and 2,952.78 is: 4,074.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,436.78 : 7,502.79 = 2,952.78 : x
  2. Step 2: Convert to fraction form
    5,436.78/7,502.79 = 2,952.78/x
  3. Step 3: Cross multiply
    5,436.78x = 7,502.79 × 2,952.78
  4. Step 4: Simplify right side
    5,436.78x = 22,154,088.26
  5. Step 5: Solve for x
    x = 22,154,088.26/5,436.78
  6. Step 6: Final answer
    x = 4,074.85

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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.