Home / 5,587.38-8,380.81-1,638.47

Finding the Fourth Proportional to 5,587.38, 8,380.81 and 1,638.47

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Solution

The fourth proportional to 5,587.38, 8,380.81 and 1,638.47 is: 2,457.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,587.38 : 8,380.81 = 1,638.47 : x
  2. Step 2: Convert to fraction form
    5,587.38/8,380.81 = 1,638.47/x
  3. Step 3: Cross multiply
    5,587.38x = 8,380.81 × 1,638.47
  4. Step 4: Simplify right side
    5,587.38x = 13,731,697.57
  5. Step 5: Solve for x
    x = 13,731,697.57/5,587.38
  6. Step 6: Final answer
    x = 2,457.63

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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.