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Finding the Fourth Proportional to 5,728.51, 8,578.18 and 3,774.79

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Solution

The fourth proportional to 5,728.51, 8,578.18 and 3,774.79 is: 5,652.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,728.51 : 8,578.18 = 3,774.79 : x
  2. Step 2: Convert to fraction form
    5,728.51/8,578.18 = 3,774.79/x
  3. Step 3: Cross multiply
    5,728.51x = 8,578.18 × 3,774.79
  4. Step 4: Simplify right side
    5,728.51x = 32,380,828.08
  5. Step 5: Solve for x
    x = 32,380,828.08/5,728.51
  6. Step 6: Final answer
    x = 5,652.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.