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Finding the Fourth Proportional to 5,679.64, 7,839.30 and 3,323.32

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Solution

The fourth proportional to 5,679.64, 7,839.30 and 3,323.32 is: 4,587.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,679.64 : 7,839.30 = 3,323.32 : x
  2. Step 2: Convert to fraction form
    5,679.64/7,839.30 = 3,323.32/x
  3. Step 3: Cross multiply
    5,679.64x = 7,839.30 × 3,323.32
  4. Step 4: Simplify right side
    5,679.64x = 26,052,502.48
  5. Step 5: Solve for x
    x = 26,052,502.48/5,679.64
  6. Step 6: Final answer
    x = 4,587.00

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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.