Home / 2,280.84-3,421.77-720.93

Finding the Fourth Proportional to 2,280.84, 3,421.77 and 720.93

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Solution

The fourth proportional to 2,280.84, 3,421.77 and 720.93 is: 1,081.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.84 : 3,421.77 = 720.93 : x
  2. Step 2: Convert to fraction form
    2,280.84/3,421.77 = 720.93/x
  3. Step 3: Cross multiply
    2,280.84x = 3,421.77 × 720.93
  4. Step 4: Simplify right side
    2,280.84x = 2,466,853.94
  5. Step 5: Solve for x
    x = 2,466,853.94/2,280.84
  6. Step 6: Final answer
    x = 1,081.56

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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.