Home / 5,679.18-8,516.33-1,980.31

Finding the Fourth Proportional to 5,679.18, 8,516.33 and 1,980.31

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Solution

The fourth proportional to 5,679.18, 8,516.33 and 1,980.31 is: 2,969.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,679.18 : 8,516.33 = 1,980.31 : x
  2. Step 2: Convert to fraction form
    5,679.18/8,516.33 = 1,980.31/x
  3. Step 3: Cross multiply
    5,679.18x = 8,516.33 × 1,980.31
  4. Step 4: Simplify right side
    5,679.18x = 16,864,989.06
  5. Step 5: Solve for x
    x = 16,864,989.06/5,679.18
  6. Step 6: Final answer
    x = 2,969.62

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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.