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Finding the Fourth Proportional to 8,955.93, 13,422.78 and 7,490.64

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Solution

The fourth proportional to 8,955.93, 13,422.78 and 7,490.64 is: 11,226.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,955.93 : 13,422.78 = 7,490.64 : x
  2. Step 2: Convert to fraction form
    8,955.93/13,422.78 = 7,490.64/x
  3. Step 3: Cross multiply
    8,955.93x = 13,422.78 × 7,490.64
  4. Step 4: Simplify right side
    8,955.93x = 100,545,212.78
  5. Step 5: Solve for x
    x = 100,545,212.78/8,955.93
  6. Step 6: Final answer
    x = 11,226.66

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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.