Home / 2,880.36-3,965.28-2,748.11

Finding the Fourth Proportional to 2,880.36, 3,965.28 and 2,748.11

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Solution

The fourth proportional to 2,880.36, 3,965.28 and 2,748.11 is: 3,783.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,880.36 : 3,965.28 = 2,748.11 : x
  2. Step 2: Convert to fraction form
    2,880.36/3,965.28 = 2,748.11/x
  3. Step 3: Cross multiply
    2,880.36x = 3,965.28 × 2,748.11
  4. Step 4: Simplify right side
    2,880.36x = 10,897,025.62
  5. Step 5: Solve for x
    x = 10,897,025.62/2,880.36
  6. Step 6: Final answer
    x = 3,783.22

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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.