Home / 3,880.56-5,352.16-2,760.40

Finding the Fourth Proportional to 3,880.56, 5,352.16 and 2,760.40

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Solution

The fourth proportional to 3,880.56, 5,352.16 and 2,760.40 is: 3,807.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880.56 : 5,352.16 = 2,760.40 : x
  2. Step 2: Convert to fraction form
    3,880.56/5,352.16 = 2,760.40/x
  3. Step 3: Cross multiply
    3,880.56x = 5,352.16 × 2,760.40
  4. Step 4: Simplify right side
    3,880.56x = 14,774,102.46
  5. Step 5: Solve for x
    x = 14,774,102.46/3,880.56
  6. Step 6: Final answer
    x = 3,807.21

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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.