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Finding the Fourth Proportional to 3,970.56, 5,925.84 and 3,866.88

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Solution

The fourth proportional to 3,970.56, 5,925.84 and 3,866.88 is: 5,771.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.56 : 5,925.84 = 3,866.88 : x
  2. Step 2: Convert to fraction form
    3,970.56/5,925.84 = 3,866.88/x
  3. Step 3: Cross multiply
    3,970.56x = 5,925.84 × 3,866.88
  4. Step 4: Simplify right side
    3,970.56x = 22,914,512.18
  5. Step 5: Solve for x
    x = 22,914,512.18/3,970.56
  6. Step 6: Final answer
    x = 5,771.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.