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Finding the Fourth Proportional to 3,888.72, 5,833.05 and 1,291.65

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Solution

The fourth proportional to 3,888.72, 5,833.05 and 1,291.65 is: 1,937.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.72 : 5,833.05 = 1,291.65 : x
  2. Step 2: Convert to fraction form
    3,888.72/5,833.05 = 1,291.65/x
  3. Step 3: Cross multiply
    3,888.72x = 5,833.05 × 1,291.65
  4. Step 4: Simplify right side
    3,888.72x = 7,534,259.03
  5. Step 5: Solve for x
    x = 7,534,259.03/3,888.72
  6. Step 6: Final answer
    x = 1,937.47

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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.