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Finding the Fourth Proportional to 8,958.94, 12,364.70 and 5,424.20

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Solution

The fourth proportional to 8,958.94, 12,364.70 and 5,424.20 is: 7,486.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,958.94 : 12,364.70 = 5,424.20 : x
  2. Step 2: Convert to fraction form
    8,958.94/12,364.70 = 5,424.20/x
  3. Step 3: Cross multiply
    8,958.94x = 12,364.70 × 5,424.20
  4. Step 4: Simplify right side
    8,958.94x = 67,068,593.67
  5. Step 5: Solve for x
    x = 67,068,593.67/8,958.94
  6. Step 6: Final answer
    x = 7,486.22

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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.