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Finding the Fourth Proportional to 8,620.58, 12,931.16 and 2,697.99

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Solution

The fourth proportional to 8,620.58, 12,931.16 and 2,697.99 is: 4,047.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,620.58 : 12,931.16 = 2,697.99 : x
  2. Step 2: Convert to fraction form
    8,620.58/12,931.16 = 2,697.99/x
  3. Step 3: Cross multiply
    8,620.58x = 12,931.16 × 2,697.99
  4. Step 4: Simplify right side
    8,620.58x = 34,888,126.88
  5. Step 5: Solve for x
    x = 34,888,126.88/8,620.58
  6. Step 6: Final answer
    x = 4,047.08

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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.