Home / 3,150.40-4,749.20-2,938.96

Finding the Fourth Proportional to 3,150.40, 4,749.20 and 2,938.96

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Solution

The fourth proportional to 3,150.40, 4,749.20 and 2,938.96 is: 4,430.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,150.40 : 4,749.20 = 2,938.96 : x
  2. Step 2: Convert to fraction form
    3,150.40/4,749.20 = 2,938.96/x
  3. Step 3: Cross multiply
    3,150.40x = 4,749.20 × 2,938.96
  4. Step 4: Simplify right side
    3,150.40x = 13,957,708.83
  5. Step 5: Solve for x
    x = 13,957,708.83/3,150.40
  6. Step 6: Final answer
    x = 4,430.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.