Home / 5,678.29-8,518.36-1,981.59

Finding the Fourth Proportional to 5,678.29, 8,518.36 and 1,981.59

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Solution

The fourth proportional to 5,678.29, 8,518.36 and 1,981.59 is: 2,972.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,678.29 : 8,518.36 = 1,981.59 : x
  2. Step 2: Convert to fraction form
    5,678.29/8,518.36 = 1,981.59/x
  3. Step 3: Cross multiply
    5,678.29x = 8,518.36 × 1,981.59
  4. Step 4: Simplify right side
    5,678.29x = 16,879,896.99
  5. Step 5: Solve for x
    x = 16,879,896.99/5,678.29
  6. Step 6: Final answer
    x = 2,972.71

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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.