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Finding the Fourth Proportional to 5,717.64, 8,578.08 and 4,687.32

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Solution

The fourth proportional to 5,717.64, 8,578.08 and 4,687.32 is: 7,032.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,717.64 : 8,578.08 = 4,687.32 : x
  2. Step 2: Convert to fraction form
    5,717.64/8,578.08 = 4,687.32/x
  3. Step 3: Cross multiply
    5,717.64x = 8,578.08 × 4,687.32
  4. Step 4: Simplify right side
    5,717.64x = 40,208,205.95
  5. Step 5: Solve for x
    x = 40,208,205.95/5,717.64
  6. Step 6: Final answer
    x = 7,032.31

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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.