Home / 6,319.04-8,720.64-3,667.28

Finding the Fourth Proportional to 6,319.04, 8,720.64 and 3,667.28

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Solution

The fourth proportional to 6,319.04, 8,720.64 and 3,667.28 is: 5,061.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,319.04 : 8,720.64 = 3,667.28 : x
  2. Step 2: Convert to fraction form
    6,319.04/8,720.64 = 3,667.28/x
  3. Step 3: Cross multiply
    6,319.04x = 8,720.64 × 3,667.28
  4. Step 4: Simplify right side
    6,319.04x = 31,981,028.66
  5. Step 5: Solve for x
    x = 31,981,028.66/6,319.04
  6. Step 6: Final answer
    x = 5,061.06

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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.