Home / 2,312.12-3,205.36-2,187.38

Finding the Fourth Proportional to 2,312.12, 3,205.36 and 2,187.38

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Solution

The fourth proportional to 2,312.12, 3,205.36 and 2,187.38 is: 3,032.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,312.12 : 3,205.36 = 2,187.38 : x
  2. Step 2: Convert to fraction form
    2,312.12/3,205.36 = 2,187.38/x
  3. Step 3: Cross multiply
    2,312.12x = 3,205.36 × 2,187.38
  4. Step 4: Simplify right side
    2,312.12x = 7,011,329.42
  5. Step 5: Solve for x
    x = 7,011,329.42/2,312.12
  6. Step 6: Final answer
    x = 3,032.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.