Home / 5,677.99-8,515.59-1,979.68

Finding the Fourth Proportional to 5,677.99, 8,515.59 and 1,979.68

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Solution

The fourth proportional to 5,677.99, 8,515.59 and 1,979.68 is: 2,969.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,677.99 : 8,515.59 = 1,979.68 : x
  2. Step 2: Convert to fraction form
    5,677.99/8,515.59 = 1,979.68/x
  3. Step 3: Cross multiply
    5,677.99x = 8,515.59 × 1,979.68
  4. Step 4: Simplify right side
    5,677.99x = 16,858,143.21
  5. Step 5: Solve for x
    x = 16,858,143.21/5,677.99
  6. Step 6: Final answer
    x = 2,969.03

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1.5x scale

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.