Home / 2,280.93-3,421.86-721.19

Finding the Fourth Proportional to 2,280.93, 3,421.86 and 721.19

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Solution

The fourth proportional to 2,280.93, 3,421.86 and 721.19 is: 1,081.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.93 : 3,421.86 = 721.19 : x
  2. Step 2: Convert to fraction form
    2,280.93/3,421.86 = 721.19/x
  3. Step 3: Cross multiply
    2,280.93x = 3,421.86 × 721.19
  4. Step 4: Simplify right side
    2,280.93x = 2,467,794.10
  5. Step 5: Solve for x
    x = 2,467,794.10/2,280.93
  6. Step 6: Final answer
    x = 1,081.92

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1.5x scale

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.