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Finding the Fourth Proportional to 8,965.79, 13,415.51 and 5,409.97

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Solution

The fourth proportional to 8,965.79, 13,415.51 and 5,409.97 is: 8,094.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,965.79 : 13,415.51 = 5,409.97 : x
  2. Step 2: Convert to fraction form
    8,965.79/13,415.51 = 5,409.97/x
  3. Step 3: Cross multiply
    8,965.79x = 13,415.51 × 5,409.97
  4. Step 4: Simplify right side
    8,965.79x = 72,577,506.63
  5. Step 5: Solve for x
    x = 72,577,506.63/8,965.79
  6. Step 6: Final answer
    x = 8,094.94

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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.