Home / 5,787-8,678.70-2,088.75

Finding the Fourth Proportional to 5,787, 8,678.70 and 2,088.75

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Solution

The fourth proportional to 5,787, 8,678.70 and 2,088.75 is: 3,132.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,787 : 8,678.70 = 2,088.75 : x
  2. Step 2: Convert to fraction form
    5,787/8,678.70 = 2,088.75/x
  3. Step 3: Cross multiply
    5,787x = 8,678.70 × 2,088.75
  4. Step 4: Simplify right side
    5,787x = 18,127,591.23
  5. Step 5: Solve for x
    x = 18,127,591.23/5,787
  6. Step 6: Final answer
    x = 3,132.47

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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.