Home / 9,979.20-13,770.36-5,787

Finding the Fourth Proportional to 9,979.20, 13,770.36 and 5,787

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Solution

The fourth proportional to 9,979.20, 13,770.36 and 5,787 is: 7,985.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,979.20 : 13,770.36 = 5,787 : x
  2. Step 2: Convert to fraction form
    9,979.20/13,770.36 = 5,787/x
  3. Step 3: Cross multiply
    9,979.20x = 13,770.36 × 5,787
  4. Step 4: Simplify right side
    9,979.20x = 79,689,073.32
  5. Step 5: Solve for x
    x = 79,689,073.32/9,979.20
  6. Step 6: Final answer
    x = 7,985.52

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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.