Home / 2,958.79-4,430.60-2,871.20

Finding the Fourth Proportional to 2,958.79, 4,430.60 and 2,871.20

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Solution

The fourth proportional to 2,958.79, 4,430.60 and 2,871.20 is: 4,299.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,958.79 : 4,430.60 = 2,871.20 : x
  2. Step 2: Convert to fraction form
    2,958.79/4,430.60 = 2,871.20/x
  3. Step 3: Cross multiply
    2,958.79x = 4,430.60 × 2,871.20
  4. Step 4: Simplify right side
    2,958.79x = 12,721,138.72
  5. Step 5: Solve for x
    x = 12,721,138.72/2,958.79
  6. Step 6: Final answer
    x = 4,299.44

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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.