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Finding the Fourth Proportional to 3,888.32, 5,832.06 and 1,290.92

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Solution

The fourth proportional to 3,888.32, 5,832.06 and 1,290.92 is: 1,936.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.32 : 5,832.06 = 1,290.92 : x
  2. Step 2: Convert to fraction form
    3,888.32/5,832.06 = 1,290.92/x
  3. Step 3: Cross multiply
    3,888.32x = 5,832.06 × 1,290.92
  4. Step 4: Simplify right side
    3,888.32x = 7,528,722.90
  5. Step 5: Solve for x
    x = 7,528,722.90/3,888.32
  6. Step 6: Final answer
    x = 1,936.24

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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.