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Finding the Fourth Proportional to 8,657.64, 12,994.56 and 4,756.68

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Solution

The fourth proportional to 8,657.64, 12,994.56 and 4,756.68 is: 7,139.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,657.64 : 12,994.56 = 4,756.68 : x
  2. Step 2: Convert to fraction form
    8,657.64/12,994.56 = 4,756.68/x
  3. Step 3: Cross multiply
    8,657.64x = 12,994.56 × 4,756.68
  4. Step 4: Simplify right side
    8,657.64x = 61,810,963.66
  5. Step 5: Solve for x
    x = 61,810,963.66/8,657.64
  6. Step 6: Final answer
    x = 7,139.47

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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.