Home / 5,543.35-8,315.84-1,985.20

Finding the Fourth Proportional to 5,543.35, 8,315.84 and 1,985.20

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Solution

The fourth proportional to 5,543.35, 8,315.84 and 1,985.20 is: 2,978.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,543.35 : 8,315.84 = 1,985.20 : x
  2. Step 2: Convert to fraction form
    5,543.35/8,315.84 = 1,985.20/x
  3. Step 3: Cross multiply
    5,543.35x = 8,315.84 × 1,985.20
  4. Step 4: Simplify right side
    5,543.35x = 16,508,605.57
  5. Step 5: Solve for x
    x = 16,508,605.57/5,543.35
  6. Step 6: Final answer
    x = 2,978.09

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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.