Home / 1,972.32-2,722.20-1,133.61

Finding the Fourth Proportional to 1,972.32, 2,722.20 and 1,133.61

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Solution

The fourth proportional to 1,972.32, 2,722.20 and 1,133.61 is: 1,564.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.32 : 2,722.20 = 1,133.61 : x
  2. Step 2: Convert to fraction form
    1,972.32/2,722.20 = 1,133.61/x
  3. Step 3: Cross multiply
    1,972.32x = 2,722.20 × 1,133.61
  4. Step 4: Simplify right side
    1,972.32x = 3,085,913.14
  5. Step 5: Solve for x
    x = 3,085,913.14/1,972.32
  6. Step 6: Final answer
    x = 1,564.61

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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.