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Finding the Fourth Proportional to 8,445.88, 11,655.90 and 4,910.20

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Solution

The fourth proportional to 8,445.88, 11,655.90 and 4,910.20 is: 6,776.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,445.88 : 11,655.90 = 4,910.20 : x
  2. Step 2: Convert to fraction form
    8,445.88/11,655.90 = 4,910.20/x
  3. Step 3: Cross multiply
    8,445.88x = 11,655.90 × 4,910.20
  4. Step 4: Simplify right side
    8,445.88x = 57,232,800.18
  5. Step 5: Solve for x
    x = 57,232,800.18/8,445.88
  6. Step 6: Final answer
    x = 6,776.42

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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.