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Finding the Fourth Proportional to 2,984.10, 4,474.80 and 1,339.80

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Solution

The fourth proportional to 2,984.10, 4,474.80 and 1,339.80 is: 2,009.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,984.10 : 4,474.80 = 1,339.80 : x
  2. Step 2: Convert to fraction form
    2,984.10/4,474.80 = 1,339.80/x
  3. Step 3: Cross multiply
    2,984.10x = 4,474.80 × 1,339.80
  4. Step 4: Simplify right side
    2,984.10x = 5,995,337.04
  5. Step 5: Solve for x
    x = 5,995,337.04/2,984.10
  6. Step 6: Final answer
    x = 2,009.09

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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.