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Finding the Fourth Proportional to 8,950.48, 12,352.63 and 5,415.64

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Solution

The fourth proportional to 8,950.48, 12,352.63 and 5,415.64 is: 7,474.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,950.48 : 12,352.63 = 5,415.64 : x
  2. Step 2: Convert to fraction form
    8,950.48/12,352.63 = 5,415.64/x
  3. Step 3: Cross multiply
    8,950.48x = 12,352.63 × 5,415.64
  4. Step 4: Simplify right side
    8,950.48x = 66,897,397.13
  5. Step 5: Solve for x
    x = 66,897,397.13/8,950.48
  6. Step 6: Final answer
    x = 7,474.17

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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.