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Finding the Fourth Proportional to 8,924.60, 12,315.76 and 4,945.68

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Solution

The fourth proportional to 8,924.60, 12,315.76 and 4,945.68 is: 6,824.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,924.60 : 12,315.76 = 4,945.68 : x
  2. Step 2: Convert to fraction form
    8,924.60/12,315.76 = 4,945.68/x
  3. Step 3: Cross multiply
    8,924.60x = 12,315.76 × 4,945.68
  4. Step 4: Simplify right side
    8,924.60x = 60,909,807.92
  5. Step 5: Solve for x
    x = 60,909,807.92/8,924.60
  6. Step 6: Final answer
    x = 6,824.93

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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.