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Finding the Fourth Proportional to 8,563.79, 11,818.05 and 4,787.09

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Solution

The fourth proportional to 8,563.79, 11,818.05 and 4,787.09 is: 6,606.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,563.79 : 11,818.05 = 4,787.09 : x
  2. Step 2: Convert to fraction form
    8,563.79/11,818.05 = 4,787.09/x
  3. Step 3: Cross multiply
    8,563.79x = 11,818.05 × 4,787.09
  4. Step 4: Simplify right side
    8,563.79x = 56,574,068.97
  5. Step 5: Solve for x
    x = 56,574,068.97/8,563.79
  6. Step 6: Final answer
    x = 6,606.20

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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.