Home / 2,939.95-4,408.79-1,478.08

Finding the Fourth Proportional to 2,939.95, 4,408.79 and 1,478.08

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Solution

The fourth proportional to 2,939.95, 4,408.79 and 1,478.08 is: 2,216.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.95 : 4,408.79 = 1,478.08 : x
  2. Step 2: Convert to fraction form
    2,939.95/4,408.79 = 1,478.08/x
  3. Step 3: Cross multiply
    2,939.95x = 4,408.79 × 1,478.08
  4. Step 4: Simplify right side
    2,939.95x = 6,516,536.93
  5. Step 5: Solve for x
    x = 6,516,536.93/2,939.95
  6. Step 6: Final answer
    x = 2,216.55

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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.