Home / 8,619.56-12,931.20-2,776.63

Finding the Fourth Proportional to 8,619.56, 12,931.20 and 2,776.63

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Solution

The fourth proportional to 8,619.56, 12,931.20 and 2,776.63 is: 4,165.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.56 : 12,931.20 = 2,776.63 : x
  2. Step 2: Convert to fraction form
    8,619.56/12,931.20 = 2,776.63/x
  3. Step 3: Cross multiply
    8,619.56x = 12,931.20 × 2,776.63
  4. Step 4: Simplify right side
    8,619.56x = 35,905,125.53
  5. Step 5: Solve for x
    x = 35,905,125.53/8,619.56
  6. Step 6: Final answer
    x = 4,165.54

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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.