Home / 3,120.42-4,307.97-2,328.10

Finding the Fourth Proportional to 3,120.42, 4,307.97 and 2,328.10

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Solution

The fourth proportional to 3,120.42, 4,307.97 and 2,328.10 is: 3,214.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.42 : 4,307.97 = 2,328.10 : x
  2. Step 2: Convert to fraction form
    3,120.42/4,307.97 = 2,328.10/x
  3. Step 3: Cross multiply
    3,120.42x = 4,307.97 × 2,328.10
  4. Step 4: Simplify right side
    3,120.42x = 10,029,382.92
  5. Step 5: Solve for x
    x = 10,029,382.92/3,120.42
  6. Step 6: Final answer
    x = 3,214.11

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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.