Home / 3,810.10-5,715.15-2,643.70

Finding the Fourth Proportional to 3,810.10, 5,715.15 and 2,643.70

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Solution

The fourth proportional to 3,810.10, 5,715.15 and 2,643.70 is: 3,965.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,810.10 : 5,715.15 = 2,643.70 : x
  2. Step 2: Convert to fraction form
    3,810.10/5,715.15 = 2,643.70/x
  3. Step 3: Cross multiply
    3,810.10x = 5,715.15 × 2,643.70
  4. Step 4: Simplify right side
    3,810.10x = 15,109,142.06
  5. Step 5: Solve for x
    x = 15,109,142.06/3,810.10
  6. Step 6: Final answer
    x = 3,965.55

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.