Home / 9,979.04-13,770.96-5,787.68

Finding the Fourth Proportional to 9,979.04, 13,770.96 and 5,787.68

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Solution

The fourth proportional to 9,979.04, 13,770.96 and 5,787.68 is: 7,986.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,979.04 : 13,770.96 = 5,787.68 : x
  2. Step 2: Convert to fraction form
    9,979.04/13,770.96 = 5,787.68/x
  3. Step 3: Cross multiply
    9,979.04x = 13,770.96 × 5,787.68
  4. Step 4: Simplify right side
    9,979.04x = 79,701,909.77
  5. Step 5: Solve for x
    x = 79,701,909.77/9,979.04
  6. Step 6: Final answer
    x = 7,986.93

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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.