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Finding the Fourth Proportional to 5,787.65, 7,987.16 and 3,518.24

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Solution

The fourth proportional to 5,787.65, 7,987.16 and 3,518.24 is: 4,855.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,787.65 : 7,987.16 = 3,518.24 : x
  2. Step 2: Convert to fraction form
    5,787.65/7,987.16 = 3,518.24/x
  3. Step 3: Cross multiply
    5,787.65x = 7,987.16 × 3,518.24
  4. Step 4: Simplify right side
    5,787.65x = 28,100,694.87
  5. Step 5: Solve for x
    x = 28,100,694.87/5,787.65
  6. Step 6: Final answer
    x = 4,855.28

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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.