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Finding the Fourth Proportional to 5,787.95, 8,686.78 and 4,640.99

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Solution

The fourth proportional to 5,787.95, 8,686.78 and 4,640.99 is: 6,965.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,787.95 : 8,686.78 = 4,640.99 : x
  2. Step 2: Convert to fraction form
    5,787.95/8,686.78 = 4,640.99/x
  3. Step 3: Cross multiply
    5,787.95x = 8,686.78 × 4,640.99
  4. Step 4: Simplify right side
    5,787.95x = 40,315,204.08
  5. Step 5: Solve for x
    x = 40,315,204.08/5,787.95
  6. Step 6: Final answer
    x = 6,965.37

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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.