Home / 2,351.61-3,245.74-2,115.14

Finding the Fourth Proportional to 2,351.61, 3,245.74 and 2,115.14

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Solution

The fourth proportional to 2,351.61, 3,245.74 and 2,115.14 is: 2,919.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,351.61 : 3,245.74 = 2,115.14 : x
  2. Step 2: Convert to fraction form
    2,351.61/3,245.74 = 2,115.14/x
  3. Step 3: Cross multiply
    2,351.61x = 3,245.74 × 2,115.14
  4. Step 4: Simplify right side
    2,351.61x = 6,865,172.99
  5. Step 5: Solve for x
    x = 6,865,172.99/2,351.61
  6. Step 6: Final answer
    x = 2,919.35

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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.