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Finding the Fourth Proportional to 3,924.48, 5,886.72 and 1,326.72

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Solution

The fourth proportional to 3,924.48, 5,886.72 and 1,326.72 is: 1,990.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,924.48 : 5,886.72 = 1,326.72 : x
  2. Step 2: Convert to fraction form
    3,924.48/5,886.72 = 1,326.72/x
  3. Step 3: Cross multiply
    3,924.48x = 5,886.72 × 1,326.72
  4. Step 4: Simplify right side
    3,924.48x = 7,810,029.16
  5. Step 5: Solve for x
    x = 7,810,029.16/3,924.48
  6. Step 6: Final answer
    x = 1,990.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.