Home / 8,543.20-12,782.33-5,212.35

Finding the Fourth Proportional to 8,543.20, 12,782.33 and 5,212.35

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Solution

The fourth proportional to 8,543.20, 12,782.33 and 5,212.35 is: 7,798.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,543.20 : 12,782.33 = 5,212.35 : x
  2. Step 2: Convert to fraction form
    8,543.20/12,782.33 = 5,212.35/x
  3. Step 3: Cross multiply
    8,543.20x = 12,782.33 × 5,212.35
  4. Step 4: Simplify right side
    8,543.20x = 66,625,985.92
  5. Step 5: Solve for x
    x = 66,625,985.92/8,543.20
  6. Step 6: Final answer
    x = 7,798.72

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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.