Home / 2,071.67-2,859.44-1,187.96

Finding the Fourth Proportional to 2,071.67, 2,859.44 and 1,187.96

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Solution

The fourth proportional to 2,071.67, 2,859.44 and 1,187.96 is: 1,639.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,071.67 : 2,859.44 = 1,187.96 : x
  2. Step 2: Convert to fraction form
    2,071.67/2,859.44 = 1,187.96/x
  3. Step 3: Cross multiply
    2,071.67x = 2,859.44 × 1,187.96
  4. Step 4: Simplify right side
    2,071.67x = 3,396,880.11
  5. Step 5: Solve for x
    x = 3,396,880.11/2,071.67
  6. Step 6: Final answer
    x = 1,639.69

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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.