Home / 3,880.88-5,353.08-2,308.40

Finding the Fourth Proportional to 3,880.88, 5,353.08 and 2,308.40

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Solution

The fourth proportional to 3,880.88, 5,353.08 and 2,308.40 is: 3,184.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880.88 : 5,353.08 = 2,308.40 : x
  2. Step 2: Convert to fraction form
    3,880.88/5,353.08 = 2,308.40/x
  3. Step 3: Cross multiply
    3,880.88x = 5,353.08 × 2,308.40
  4. Step 4: Simplify right side
    3,880.88x = 12,357,049.87
  5. Step 5: Solve for x
    x = 12,357,049.87/3,880.88
  6. Step 6: Final answer
    x = 3,184.08

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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.