Home / 5,787.15-8,678.16-2,666.40

Finding the Fourth Proportional to 5,787.15, 8,678.16 and 2,666.40

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Solution

The fourth proportional to 5,787.15, 8,678.16 and 2,666.40 is: 3,998.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,787.15 : 8,678.16 = 2,666.40 : x
  2. Step 2: Convert to fraction form
    5,787.15/8,678.16 = 2,666.40/x
  3. Step 3: Cross multiply
    5,787.15x = 8,678.16 × 2,666.40
  4. Step 4: Simplify right side
    5,787.15x = 23,139,445.82
  5. Step 5: Solve for x
    x = 23,139,445.82/5,787.15
  6. Step 6: Final answer
    x = 3,998.42

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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.