Home / 2,091.92-2,886.81-1,207.67

Finding the Fourth Proportional to 2,091.92, 2,886.81 and 1,207.67

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Solution

The fourth proportional to 2,091.92, 2,886.81 and 1,207.67 is: 1,666.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,091.92 : 2,886.81 = 1,207.67 : x
  2. Step 2: Convert to fraction form
    2,091.92/2,886.81 = 1,207.67/x
  3. Step 3: Cross multiply
    2,091.92x = 2,886.81 × 1,207.67
  4. Step 4: Simplify right side
    2,091.92x = 3,486,299.40
  5. Step 5: Solve for x
    x = 3,486,299.40/2,091.92
  6. Step 6: Final answer
    x = 1,666.56

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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.