Home / 3,150.63-4,348.86-2,155.53

Finding the Fourth Proportional to 3,150.63, 4,348.86 and 2,155.53

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Solution

The fourth proportional to 3,150.63, 4,348.86 and 2,155.53 is: 2,975.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,150.63 : 4,348.86 = 2,155.53 : x
  2. Step 2: Convert to fraction form
    3,150.63/4,348.86 = 2,155.53/x
  3. Step 3: Cross multiply
    3,150.63x = 4,348.86 × 2,155.53
  4. Step 4: Simplify right side
    3,150.63x = 9,374,098.20
  5. Step 5: Solve for x
    x = 9,374,098.20/3,150.63
  6. Step 6: Final answer
    x = 2,975.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.