Home / 2,872.95-4,306.32-1,228.65

Finding the Fourth Proportional to 2,872.95, 4,306.32 and 1,228.65

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Solution

The fourth proportional to 2,872.95, 4,306.32 and 1,228.65 is: 1,841.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,872.95 : 4,306.32 = 1,228.65 : x
  2. Step 2: Convert to fraction form
    2,872.95/4,306.32 = 1,228.65/x
  3. Step 3: Cross multiply
    2,872.95x = 4,306.32 × 1,228.65
  4. Step 4: Simplify right side
    2,872.95x = 5,290,960.07
  5. Step 5: Solve for x
    x = 5,290,960.07/2,872.95
  6. Step 6: Final answer
    x = 1,841.65

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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.