Home / 5,679.92-8,515.68-1,782.08

Finding the Fourth Proportional to 5,679.92, 8,515.68 and 1,782.08

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Solution

The fourth proportional to 5,679.92, 8,515.68 and 1,782.08 is: 2,671.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,679.92 : 8,515.68 = 1,782.08 : x
  2. Step 2: Convert to fraction form
    5,679.92/8,515.68 = 1,782.08/x
  3. Step 3: Cross multiply
    5,679.92x = 8,515.68 × 1,782.08
  4. Step 4: Simplify right side
    5,679.92x = 15,175,623.01
  5. Step 5: Solve for x
    x = 15,175,623.01/5,679.92
  6. Step 6: Final answer
    x = 2,671.80

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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.