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Finding the Fourth Proportional to 8,722.89, 12,037.33 and 4,946.40

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Solution

The fourth proportional to 8,722.89, 12,037.33 and 4,946.40 is: 6,825.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,722.89 : 12,037.33 = 4,946.40 : x
  2. Step 2: Convert to fraction form
    8,722.89/12,037.33 = 4,946.40/x
  3. Step 3: Cross multiply
    8,722.89x = 12,037.33 × 4,946.40
  4. Step 4: Simplify right side
    8,722.89x = 59,541,406.65
  5. Step 5: Solve for x
    x = 59,541,406.65/8,722.89
  6. Step 6: Final answer
    x = 6,825.88

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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.