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Finding the Fourth Proportional to 11,872.70, 17,809.05 and 4,946.30

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Solution

The fourth proportional to 11,872.70, 17,809.05 and 4,946.30 is: 7,419.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,872.70 : 17,809.05 = 4,946.30 : x
  2. Step 2: Convert to fraction form
    11,872.70/17,809.05 = 4,946.30/x
  3. Step 3: Cross multiply
    11,872.70x = 17,809.05 × 4,946.30
  4. Step 4: Simplify right side
    11,872.70x = 88,088,904.02
  5. Step 5: Solve for x
    x = 88,088,904.02/11,872.70
  6. Step 6: Final answer
    x = 7,419.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.