Home / 5,139.21-7,708.68-1,441.47

Finding the Fourth Proportional to 5,139.21, 7,708.68 and 1,441.47

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Solution

The fourth proportional to 5,139.21, 7,708.68 and 1,441.47 is: 2,162.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.21 : 7,708.68 = 1,441.47 : x
  2. Step 2: Convert to fraction form
    5,139.21/7,708.68 = 1,441.47/x
  3. Step 3: Cross multiply
    5,139.21x = 7,708.68 × 1,441.47
  4. Step 4: Simplify right side
    5,139.21x = 11,111,830.96
  5. Step 5: Solve for x
    x = 11,111,830.96/5,139.21
  6. Step 6: Final answer
    x = 2,162.17

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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.