Home / 3,720.19-5,134.32-2,148.25

Finding the Fourth Proportional to 3,720.19, 5,134.32 and 2,148.25

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Solution

The fourth proportional to 3,720.19, 5,134.32 and 2,148.25 is: 2,964.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.19 : 5,134.32 = 2,148.25 : x
  2. Step 2: Convert to fraction form
    3,720.19/5,134.32 = 2,148.25/x
  3. Step 3: Cross multiply
    3,720.19x = 5,134.32 × 2,148.25
  4. Step 4: Simplify right side
    3,720.19x = 11,029,802.94
  5. Step 5: Solve for x
    x = 11,029,802.94/3,720.19
  6. Step 6: Final answer
    x = 2,964.85

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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.