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Finding the Fourth Proportional to 3,888.49, 5,833.65 and 1,291.43

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Solution

The fourth proportional to 3,888.49, 5,833.65 and 1,291.43 is: 1,937.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.49 : 5,833.65 = 1,291.43 : x
  2. Step 2: Convert to fraction form
    3,888.49/5,833.65 = 1,291.43/x
  3. Step 3: Cross multiply
    3,888.49x = 5,833.65 × 1,291.43
  4. Step 4: Simplify right side
    3,888.49x = 7,533,750.62
  5. Step 5: Solve for x
    x = 7,533,750.62/3,888.49
  6. Step 6: Final answer
    x = 1,937.45

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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.