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Finding the Fourth Proportional to 8,812.40, 12,161.28 and 4,833.28

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Solution

The fourth proportional to 8,812.40, 12,161.28 and 4,833.28 is: 6,670.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.40 : 12,161.28 = 4,833.28 : x
  2. Step 2: Convert to fraction form
    8,812.40/12,161.28 = 4,833.28/x
  3. Step 3: Cross multiply
    8,812.40x = 12,161.28 × 4,833.28
  4. Step 4: Simplify right side
    8,812.40x = 58,778,871.40
  5. Step 5: Solve for x
    x = 58,778,871.40/8,812.40
  6. Step 6: Final answer
    x = 6,670.02

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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.