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Finding the Fourth Proportional to 2,882.63, 4,320.86 and 1,239.30

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Solution

The fourth proportional to 2,882.63, 4,320.86 and 1,239.30 is: 1,857.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,882.63 : 4,320.86 = 1,239.30 : x
  2. Step 2: Convert to fraction form
    2,882.63/4,320.86 = 1,239.30/x
  3. Step 3: Cross multiply
    2,882.63x = 4,320.86 × 1,239.30
  4. Step 4: Simplify right side
    2,882.63x = 5,354,845.19
  5. Step 5: Solve for x
    x = 5,354,845.19/2,882.63
  6. Step 6: Final answer
    x = 1,857.63

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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.