Home / 7,624.49-11,428.81-2,947.72

Finding the Fourth Proportional to 7,624.49, 11,428.81 and 2,947.72

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Solution

The fourth proportional to 7,624.49, 11,428.81 and 2,947.72 is: 4,418.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,624.49 : 11,428.81 = 2,947.72 : x
  2. Step 2: Convert to fraction form
    7,624.49/11,428.81 = 2,947.72/x
  3. Step 3: Cross multiply
    7,624.49x = 11,428.81 × 2,947.72
  4. Step 4: Simplify right side
    7,624.49x = 33,688,889.18
  5. Step 5: Solve for x
    x = 33,688,889.18/7,624.49
  6. Step 6: Final answer
    x = 4,418.51

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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.