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Finding the Fourth Proportional to 6,318.64, 8,719.95 and 3,667.51

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Solution

The fourth proportional to 6,318.64, 8,719.95 and 3,667.51 is: 5,061.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,318.64 : 8,719.95 = 3,667.51 : x
  2. Step 2: Convert to fraction form
    6,318.64/8,719.95 = 3,667.51/x
  3. Step 3: Cross multiply
    6,318.64x = 8,719.95 × 3,667.51
  4. Step 4: Simplify right side
    6,318.64x = 31,980,503.82
  5. Step 5: Solve for x
    x = 31,980,503.82/6,318.64
  6. Step 6: Final answer
    x = 5,061.30

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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.