Home / 7,760.13-11,640.43-1,916.74

Finding the Fourth Proportional to 7,760.13, 11,640.43 and 1,916.74

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Solution

The fourth proportional to 7,760.13, 11,640.43 and 1,916.74 is: 2,875.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,760.13 : 11,640.43 = 1,916.74 : x
  2. Step 2: Convert to fraction form
    7,760.13/11,640.43 = 1,916.74/x
  3. Step 3: Cross multiply
    7,760.13x = 11,640.43 × 1,916.74
  4. Step 4: Simplify right side
    7,760.13x = 22,311,677.80
  5. Step 5: Solve for x
    x = 22,311,677.80/7,760.13
  6. Step 6: Final answer
    x = 2,875.17

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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.