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Finding the Fourth Proportional to 8,536, 11,780.40 and 4,810.72

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Solution

The fourth proportional to 8,536, 11,780.40 and 4,810.72 is: 6,639.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,536 : 11,780.40 = 4,810.72 : x
  2. Step 2: Convert to fraction form
    8,536/11,780.40 = 4,810.72/x
  3. Step 3: Cross multiply
    8,536x = 11,780.40 × 4,810.72
  4. Step 4: Simplify right side
    8,536x = 56,672,205.89
  5. Step 5: Solve for x
    x = 56,672,205.89/8,536
  6. Step 6: Final answer
    x = 6,639.20

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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.