Home / 3,724.75-5,140.22-2,153.35

Finding the Fourth Proportional to 3,724.75, 5,140.22 and 2,153.35

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Solution

The fourth proportional to 3,724.75, 5,140.22 and 2,153.35 is: 2,971.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,724.75 : 5,140.22 = 2,153.35 : x
  2. Step 2: Convert to fraction form
    3,724.75/5,140.22 = 2,153.35/x
  3. Step 3: Cross multiply
    3,724.75x = 5,140.22 × 2,153.35
  4. Step 4: Simplify right side
    3,724.75x = 11,068,692.74
  5. Step 5: Solve for x
    x = 11,068,692.74/3,724.75
  6. Step 6: Final answer
    x = 2,971.66

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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.