Home / 4,079.81-6,120.79-1,306.53

Finding the Fourth Proportional to 4,079.81, 6,120.79 and 1,306.53

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Solution

The fourth proportional to 4,079.81, 6,120.79 and 1,306.53 is: 1,960.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,079.81 : 6,120.79 = 1,306.53 : x
  2. Step 2: Convert to fraction form
    4,079.81/6,120.79 = 1,306.53/x
  3. Step 3: Cross multiply
    4,079.81x = 6,120.79 × 1,306.53
  4. Step 4: Simplify right side
    4,079.81x = 7,996,992.49
  5. Step 5: Solve for x
    x = 7,996,992.49/4,079.81
  6. Step 6: Final answer
    x = 1,960.14

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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.