Home / 1,164.40-1,738.33-1,115.80

Finding the Fourth Proportional to 1,164.40, 1,738.33 and 1,115.80

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Solution

The fourth proportional to 1,164.40, 1,738.33 and 1,115.80 is: 1,665.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,164.40 : 1,738.33 = 1,115.80 : x
  2. Step 2: Convert to fraction form
    1,164.40/1,738.33 = 1,115.80/x
  3. Step 3: Cross multiply
    1,164.40x = 1,738.33 × 1,115.80
  4. Step 4: Simplify right side
    1,164.40x = 1,939,628.61
  5. Step 5: Solve for x
    x = 1,939,628.61/1,164.40
  6. Step 6: Final answer
    x = 1,665.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.