Home / 3,515.79-4,849.67-2,320.78

Finding the Fourth Proportional to 3,515.79, 4,849.67 and 2,320.78

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Solution

The fourth proportional to 3,515.79, 4,849.67 and 2,320.78 is: 3,201.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,515.79 : 4,849.67 = 2,320.78 : x
  2. Step 2: Convert to fraction form
    3,515.79/4,849.67 = 2,320.78/x
  3. Step 3: Cross multiply
    3,515.79x = 4,849.67 × 2,320.78
  4. Step 4: Simplify right side
    3,515.79x = 11,255,036.96
  5. Step 5: Solve for x
    x = 11,255,036.96/3,515.79
  6. Step 6: Final answer
    x = 3,201.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.