Home / 7,916.33-11,870.55-2,649.51

Finding the Fourth Proportional to 7,916.33, 11,870.55 and 2,649.51

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Solution

The fourth proportional to 7,916.33, 11,870.55 and 2,649.51 is: 3,972.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,916.33 : 11,870.55 = 2,649.51 : x
  2. Step 2: Convert to fraction form
    7,916.33/11,870.55 = 2,649.51/x
  3. Step 3: Cross multiply
    7,916.33x = 11,870.55 × 2,649.51
  4. Step 4: Simplify right side
    7,916.33x = 31,451,140.93
  5. Step 5: Solve for x
    x = 31,451,140.93/7,916.33
  6. Step 6: Final answer
    x = 3,972.94

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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.