Home / 3,515.40-4,849.37-2,319.21

Finding the Fourth Proportional to 3,515.40, 4,849.37 and 2,319.21

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Solution

The fourth proportional to 3,515.40, 4,849.37 and 2,319.21 is: 3,199.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,515.40 : 4,849.37 = 2,319.21 : x
  2. Step 2: Convert to fraction form
    3,515.40/4,849.37 = 2,319.21/x
  3. Step 3: Cross multiply
    3,515.40x = 4,849.37 × 2,319.21
  4. Step 4: Simplify right side
    3,515.40x = 11,246,707.40
  5. Step 5: Solve for x
    x = 11,246,707.40/3,515.40
  6. Step 6: Final answer
    x = 3,199.27

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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.