Home / 3,091.80-4,637.70-1,143.78

Finding the Fourth Proportional to 3,091.80, 4,637.70 and 1,143.78

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Solution

The fourth proportional to 3,091.80, 4,637.70 and 1,143.78 is: 1,715.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,091.80 : 4,637.70 = 1,143.78 : x
  2. Step 2: Convert to fraction form
    3,091.80/4,637.70 = 1,143.78/x
  3. Step 3: Cross multiply
    3,091.80x = 4,637.70 × 1,143.78
  4. Step 4: Simplify right side
    3,091.80x = 5,304,508.51
  5. Step 5: Solve for x
    x = 5,304,508.51/3,091.80
  6. Step 6: Final answer
    x = 1,715.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.