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Finding the Fourth Proportional to 8,955.78, 13,437.54 and 3,410.79

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Solution

The fourth proportional to 8,955.78, 13,437.54 and 3,410.79 is: 5,117.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,955.78 : 13,437.54 = 3,410.79 : x
  2. Step 2: Convert to fraction form
    8,955.78/13,437.54 = 3,410.79/x
  3. Step 3: Cross multiply
    8,955.78x = 13,437.54 × 3,410.79
  4. Step 4: Simplify right side
    8,955.78x = 45,832,627.06
  5. Step 5: Solve for x
    x = 45,832,627.06/8,955.78
  6. Step 6: Final answer
    x = 5,117.66

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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.