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Finding the Fourth Proportional to 8,625.50, 11,903.20 and 4,899.50

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Solution

The fourth proportional to 8,625.50, 11,903.20 and 4,899.50 is: 6,761.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,625.50 : 11,903.20 = 4,899.50 : x
  2. Step 2: Convert to fraction form
    8,625.50/11,903.20 = 4,899.50/x
  3. Step 3: Cross multiply
    8,625.50x = 11,903.20 × 4,899.50
  4. Step 4: Simplify right side
    8,625.50x = 58,319,728.40
  5. Step 5: Solve for x
    x = 58,319,728.40/8,625.50
  6. Step 6: Final answer
    x = 6,761.32

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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.