Home / 3,720.40-5,129.95-2,374.22

Finding the Fourth Proportional to 3,720.40, 5,129.95 and 2,374.22

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Solution

The fourth proportional to 3,720.40, 5,129.95 and 2,374.22 is: 3,273.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.40 : 5,129.95 = 2,374.22 : x
  2. Step 2: Convert to fraction form
    3,720.40/5,129.95 = 2,374.22/x
  3. Step 3: Cross multiply
    3,720.40x = 5,129.95 × 2,374.22
  4. Step 4: Simplify right side
    3,720.40x = 12,179,629.89
  5. Step 5: Solve for x
    x = 12,179,629.89/3,720.40
  6. Step 6: Final answer
    x = 3,273.74

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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.