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Finding the Fourth Proportional to 8,710.86, 12,021.03 and 5,354.22

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Solution

The fourth proportional to 8,710.86, 12,021.03 and 5,354.22 is: 7,388.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,710.86 : 12,021.03 = 5,354.22 : x
  2. Step 2: Convert to fraction form
    8,710.86/12,021.03 = 5,354.22/x
  3. Step 3: Cross multiply
    8,710.86x = 12,021.03 × 5,354.22
  4. Step 4: Simplify right side
    8,710.86x = 64,363,239.25
  5. Step 5: Solve for x
    x = 64,363,239.25/8,710.86
  6. Step 6: Final answer
    x = 7,388.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.