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Finding the Fourth Proportional to 3,559.38, 5,339.08 and 1,478.08

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Solution

The fourth proportional to 3,559.38, 5,339.08 and 1,478.08 is: 2,217.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,559.38 : 5,339.08 = 1,478.08 : x
  2. Step 2: Convert to fraction form
    3,559.38/5,339.08 = 1,478.08/x
  3. Step 3: Cross multiply
    3,559.38x = 5,339.08 × 1,478.08
  4. Step 4: Simplify right side
    3,559.38x = 7,891,595.89
  5. Step 5: Solve for x
    x = 7,891,595.89/3,559.38
  6. Step 6: Final answer
    x = 2,217.13

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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.