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Finding the Fourth Proportional to 2,387.94, 3,294.99 and 1,339.80

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Solution

The fourth proportional to 2,387.94, 3,294.99 and 1,339.80 is: 1,848.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,387.94 : 3,294.99 = 1,339.80 : x
  2. Step 2: Convert to fraction form
    2,387.94/3,294.99 = 1,339.80/x
  3. Step 3: Cross multiply
    2,387.94x = 3,294.99 × 1,339.80
  4. Step 4: Simplify right side
    2,387.94x = 4,414,627.60
  5. Step 5: Solve for x
    x = 4,414,627.60/2,387.94
  6. Step 6: Final answer
    x = 1,848.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.