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Finding the Fourth Proportional to 8,990.76, 13,487.37 and 8,444.01

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Solution

The fourth proportional to 8,990.76, 13,487.37 and 8,444.01 is: 12,667.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,990.76 : 13,487.37 = 8,444.01 : x
  2. Step 2: Convert to fraction form
    8,990.76/13,487.37 = 8,444.01/x
  3. Step 3: Cross multiply
    8,990.76x = 13,487.37 × 8,444.01
  4. Step 4: Simplify right side
    8,990.76x = 113,887,487.15
  5. Step 5: Solve for x
    x = 113,887,487.15/8,990.76
  6. Step 6: Final answer
    x = 12,667.17

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1.5x scale

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.