Home / 2,778.42-4,167.79-1,047.06

Finding the Fourth Proportional to 2,778.42, 4,167.79 and 1,047.06

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Solution

The fourth proportional to 2,778.42, 4,167.79 and 1,047.06 is: 1,570.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.42 : 4,167.79 = 1,047.06 : x
  2. Step 2: Convert to fraction form
    2,778.42/4,167.79 = 1,047.06/x
  3. Step 3: Cross multiply
    2,778.42x = 4,167.79 × 1,047.06
  4. Step 4: Simplify right side
    2,778.42x = 4,363,926.20
  5. Step 5: Solve for x
    x = 4,363,926.20/2,778.42
  6. Step 6: Final answer
    x = 1,570.65

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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.