Home / 5,576.40-8,364.64-1,680.80

Finding the Fourth Proportional to 5,576.40, 8,364.64 and 1,680.80

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Solution

The fourth proportional to 5,576.40, 8,364.64 and 1,680.80 is: 2,521.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,576.40 : 8,364.64 = 1,680.80 : x
  2. Step 2: Convert to fraction form
    5,576.40/8,364.64 = 1,680.80/x
  3. Step 3: Cross multiply
    5,576.40x = 8,364.64 × 1,680.80
  4. Step 4: Simplify right side
    5,576.40x = 14,059,286.91
  5. Step 5: Solve for x
    x = 14,059,286.91/5,576.40
  6. Step 6: Final answer
    x = 2,521.21

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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.