Home / 2,208.05-3,312.98-1,167.78

Finding the Fourth Proportional to 2,208.05, 3,312.98 and 1,167.78

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Solution

The fourth proportional to 2,208.05, 3,312.98 and 1,167.78 is: 1,752.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,208.05 : 3,312.98 = 1,167.78 : x
  2. Step 2: Convert to fraction form
    2,208.05/3,312.98 = 1,167.78/x
  3. Step 3: Cross multiply
    2,208.05x = 3,312.98 × 1,167.78
  4. Step 4: Simplify right side
    2,208.05x = 3,868,831.78
  5. Step 5: Solve for x
    x = 3,868,831.78/2,208.05
  6. Step 6: Final answer
    x = 1,752.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.