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Finding the Fourth Proportional to 6,679.64, 9,215.16 and 4,323.08

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Solution

The fourth proportional to 6,679.64, 9,215.16 and 4,323.08 is: 5,964.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,679.64 : 9,215.16 = 4,323.08 : x
  2. Step 2: Convert to fraction form
    6,679.64/9,215.16 = 4,323.08/x
  3. Step 3: Cross multiply
    6,679.64x = 9,215.16 × 4,323.08
  4. Step 4: Simplify right side
    6,679.64x = 39,837,873.89
  5. Step 5: Solve for x
    x = 39,837,873.89/6,679.64
  6. Step 6: Final answer
    x = 5,964.07

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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.