Home / 3,880.12-5,354.28-2,307.92

Finding the Fourth Proportional to 3,880.12, 5,354.28 and 2,307.92

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Solution

The fourth proportional to 3,880.12, 5,354.28 and 2,307.92 is: 3,184.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880.12 : 5,354.28 = 2,307.92 : x
  2. Step 2: Convert to fraction form
    3,880.12/5,354.28 = 2,307.92/x
  3. Step 3: Cross multiply
    3,880.12x = 5,354.28 × 2,307.92
  4. Step 4: Simplify right side
    3,880.12x = 12,357,249.90
  5. Step 5: Solve for x
    x = 12,357,249.90/3,880.12
  6. Step 6: Final answer
    x = 3,184.76

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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.