Home / 4,769.80-7,156.19-2,139.51

Finding the Fourth Proportional to 4,769.80, 7,156.19 and 2,139.51

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Solution

The fourth proportional to 4,769.80, 7,156.19 and 2,139.51 is: 3,209.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,769.80 : 7,156.19 = 2,139.51 : x
  2. Step 2: Convert to fraction form
    4,769.80/7,156.19 = 2,139.51/x
  3. Step 3: Cross multiply
    4,769.80x = 7,156.19 × 2,139.51
  4. Step 4: Simplify right side
    4,769.80x = 15,310,740.07
  5. Step 5: Solve for x
    x = 15,310,740.07/4,769.80
  6. Step 6: Final answer
    x = 3,209.93

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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.