Home / 10,491.83-15,738.05-3,916.70

Finding the Fourth Proportional to 10,491.83, 15,738.05 and 3,916.70

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Solution

The fourth proportional to 10,491.83, 15,738.05 and 3,916.70 is: 5,875.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,491.83 : 15,738.05 = 3,916.70 : x
  2. Step 2: Convert to fraction form
    10,491.83/15,738.05 = 3,916.70/x
  3. Step 3: Cross multiply
    10,491.83x = 15,738.05 × 3,916.70
  4. Step 4: Simplify right side
    10,491.83x = 61,641,277.05
  5. Step 5: Solve for x
    x = 61,641,277.05/10,491.83
  6. Step 6: Final answer
    x = 5,875.17

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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.