Home / 3,619.49-5,457.20-2,897.78

Finding the Fourth Proportional to 3,619.49, 5,457.20 and 2,897.78

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Solution

The fourth proportional to 3,619.49, 5,457.20 and 2,897.78 is: 4,369.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.49 : 5,457.20 = 2,897.78 : x
  2. Step 2: Convert to fraction form
    3,619.49/5,457.20 = 2,897.78/x
  3. Step 3: Cross multiply
    3,619.49x = 5,457.20 × 2,897.78
  4. Step 4: Simplify right side
    3,619.49x = 15,813,723.24
  5. Step 5: Solve for x
    x = 15,813,723.24/3,619.49
  6. Step 6: Final answer
    x = 4,369.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.