Home / 5,680.18-8,520.72-1,982.32

Finding the Fourth Proportional to 5,680.18, 8,520.72 and 1,982.32

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Solution

The fourth proportional to 5,680.18, 8,520.72 and 1,982.32 is: 2,973.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,680.18 : 8,520.72 = 1,982.32 : x
  2. Step 2: Convert to fraction form
    5,680.18/8,520.72 = 1,982.32/x
  3. Step 3: Cross multiply
    5,680.18x = 8,520.72 × 1,982.32
  4. Step 4: Simplify right side
    5,680.18x = 16,890,818.44
  5. Step 5: Solve for x
    x = 16,890,818.44/5,680.18
  6. Step 6: Final answer
    x = 2,973.64

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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.