Home / 1,939.08-2,908.60-478.24

Finding the Fourth Proportional to 1,939.08, 2,908.60 and 478.24

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Solution

The fourth proportional to 1,939.08, 2,908.60 and 478.24 is: 717.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.08 : 2,908.60 = 478.24 : x
  2. Step 2: Convert to fraction form
    1,939.08/2,908.60 = 478.24/x
  3. Step 3: Cross multiply
    1,939.08x = 2,908.60 × 478.24
  4. Step 4: Simplify right side
    1,939.08x = 1,391,000.40
  5. Step 5: Solve for x
    x = 1,391,000.40/1,939.08
  6. Step 6: Final answer
    x = 717.35

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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.