Home / 2,307.68-3,184.08-2,111.12

Finding the Fourth Proportional to 2,307.68, 3,184.08 and 2,111.12

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Solution

The fourth proportional to 2,307.68, 3,184.08 and 2,111.12 is: 2,912.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,307.68 : 3,184.08 = 2,111.12 : x
  2. Step 2: Convert to fraction form
    2,307.68/3,184.08 = 2,111.12/x
  3. Step 3: Cross multiply
    2,307.68x = 3,184.08 × 2,111.12
  4. Step 4: Simplify right side
    2,307.68x = 6,721,974.97
  5. Step 5: Solve for x
    x = 6,721,974.97/2,307.68
  6. Step 6: Final answer
    x = 2,912.87

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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.