Home / 2,907.85-4,354.89-2,213.68

Finding the Fourth Proportional to 2,907.85, 4,354.89 and 2,213.68

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Solution

The fourth proportional to 2,907.85, 4,354.89 and 2,213.68 is: 3,315.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,907.85 : 4,354.89 = 2,213.68 : x
  2. Step 2: Convert to fraction form
    2,907.85/4,354.89 = 2,213.68/x
  3. Step 3: Cross multiply
    2,907.85x = 4,354.89 × 2,213.68
  4. Step 4: Simplify right side
    2,907.85x = 9,640,332.90
  5. Step 5: Solve for x
    x = 9,640,332.90/2,907.85
  6. Step 6: Final answer
    x = 3,315.28

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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.