Home / 2,089.21-3,134.68-977.81

Finding the Fourth Proportional to 2,089.21, 3,134.68 and 977.81

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Solution

The fourth proportional to 2,089.21, 3,134.68 and 977.81 is: 1,467.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,089.21 : 3,134.68 = 977.81 : x
  2. Step 2: Convert to fraction form
    2,089.21/3,134.68 = 977.81/x
  3. Step 3: Cross multiply
    2,089.21x = 3,134.68 × 977.81
  4. Step 4: Simplify right side
    2,089.21x = 3,065,126.84
  5. Step 5: Solve for x
    x = 3,065,126.84/2,089.21
  6. Step 6: Final answer
    x = 1,467.12

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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.