Home / 2,079.58-2,869.78-1,135.39

Finding the Fourth Proportional to 2,079.58, 2,869.78 and 1,135.39

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Solution

The fourth proportional to 2,079.58, 2,869.78 and 1,135.39 is: 1,566.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.58 : 2,869.78 = 1,135.39 : x
  2. Step 2: Convert to fraction form
    2,079.58/2,869.78 = 1,135.39/x
  3. Step 3: Cross multiply
    2,079.58x = 2,869.78 × 1,135.39
  4. Step 4: Simplify right side
    2,079.58x = 3,258,316.68
  5. Step 5: Solve for x
    x = 3,258,316.68/2,079.58
  6. Step 6: Final answer
    x = 1,566.81

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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.