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Finding the Fourth Proportional to 8,952.29, 12,355.29 and 5,415.49

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Solution

The fourth proportional to 8,952.29, 12,355.29 and 5,415.49 is: 7,474.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,952.29 : 12,355.29 = 5,415.49 : x
  2. Step 2: Convert to fraction form
    8,952.29/12,355.29 = 5,415.49/x
  3. Step 3: Cross multiply
    8,952.29x = 12,355.29 × 5,415.49
  4. Step 4: Simplify right side
    8,952.29x = 66,909,860.59
  5. Step 5: Solve for x
    x = 66,909,860.59/8,952.29
  6. Step 6: Final answer
    x = 7,474.05

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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.