Home / 7,916.49-11,875.27-2,651.28

Finding the Fourth Proportional to 7,916.49, 11,875.27 and 2,651.28

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Solution

The fourth proportional to 7,916.49, 11,875.27 and 2,651.28 is: 3,977.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,916.49 : 11,875.27 = 2,651.28 : x
  2. Step 2: Convert to fraction form
    7,916.49/11,875.27 = 2,651.28/x
  3. Step 3: Cross multiply
    7,916.49x = 11,875.27 × 2,651.28
  4. Step 4: Simplify right side
    7,916.49x = 31,484,715.23
  5. Step 5: Solve for x
    x = 31,484,715.23/7,916.49
  6. Step 6: Final answer
    x = 3,977.11

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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.