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Finding the Fourth Proportional to 5,638.74, 8,461.21 and 2,865.65

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Solution

The fourth proportional to 5,638.74, 8,461.21 and 2,865.65 is: 4,300.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,638.74 : 8,461.21 = 2,865.65 : x
  2. Step 2: Convert to fraction form
    5,638.74/8,461.21 = 2,865.65/x
  3. Step 3: Cross multiply
    5,638.74x = 8,461.21 × 2,865.65
  4. Step 4: Simplify right side
    5,638.74x = 24,246,866.44
  5. Step 5: Solve for x
    x = 24,246,866.44/5,638.74
  6. Step 6: Final answer
    x = 4,300.05

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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.