Home / 5,411.13-8,117.00-2,640.17

Finding the Fourth Proportional to 5,411.13, 8,117.00 and 2,640.17

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Solution

The fourth proportional to 5,411.13, 8,117.00 and 2,640.17 is: 3,960.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,411.13 : 8,117.00 = 2,640.17 : x
  2. Step 2: Convert to fraction form
    5,411.13/8,117.00 = 2,640.17/x
  3. Step 3: Cross multiply
    5,411.13x = 8,117.00 × 2,640.17
  4. Step 4: Simplify right side
    5,411.13x = 21,430,206.10
  5. Step 5: Solve for x
    x = 21,430,206.10/5,411.13
  6. Step 6: Final answer
    x = 3,960.39

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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.