Home / 7,887.16-11,827.68-2,621.98

Finding the Fourth Proportional to 7,887.16, 11,827.68 and 2,621.98

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Solution

The fourth proportional to 7,887.16, 11,827.68 and 2,621.98 is: 3,931.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,887.16 : 11,827.68 = 2,621.98 : x
  2. Step 2: Convert to fraction form
    7,887.16/11,827.68 = 2,621.98/x
  3. Step 3: Cross multiply
    7,887.16x = 11,827.68 × 2,621.98
  4. Step 4: Simplify right side
    7,887.16x = 31,011,940.41
  5. Step 5: Solve for x
    x = 31,011,940.41/7,887.16
  6. Step 6: Final answer
    x = 3,931.95

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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.