Home / 2,885.91-4,329.72-1,220.19

Finding the Fourth Proportional to 2,885.91, 4,329.72 and 1,220.19

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Solution

The fourth proportional to 2,885.91, 4,329.72 and 1,220.19 is: 1,830.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,885.91 : 4,329.72 = 1,220.19 : x
  2. Step 2: Convert to fraction form
    2,885.91/4,329.72 = 1,220.19/x
  3. Step 3: Cross multiply
    2,885.91x = 4,329.72 × 1,220.19
  4. Step 4: Simplify right side
    2,885.91x = 5,283,081.05
  5. Step 5: Solve for x
    x = 5,283,081.05/2,885.91
  6. Step 6: Final answer
    x = 1,830.65

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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.