Home / 7,049.68-9,728.66-3,905.89

Finding the Fourth Proportional to 7,049.68, 9,728.66 and 3,905.89

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Solution

The fourth proportional to 7,049.68, 9,728.66 and 3,905.89 is: 5,390.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,049.68 : 9,728.66 = 3,905.89 : x
  2. Step 2: Convert to fraction form
    7,049.68/9,728.66 = 3,905.89/x
  3. Step 3: Cross multiply
    7,049.68x = 9,728.66 × 3,905.89
  4. Step 4: Simplify right side
    7,049.68x = 37,999,075.81
  5. Step 5: Solve for x
    x = 37,999,075.81/7,049.68
  6. Step 6: Final answer
    x = 5,390.18

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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.