Home / 7,721.20-11,581.88-2,384.36

Finding the Fourth Proportional to 7,721.20, 11,581.88 and 2,384.36

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Solution

The fourth proportional to 7,721.20, 11,581.88 and 2,384.36 is: 3,576.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,721.20 : 11,581.88 = 2,384.36 : x
  2. Step 2: Convert to fraction form
    7,721.20/11,581.88 = 2,384.36/x
  3. Step 3: Cross multiply
    7,721.20x = 11,581.88 × 2,384.36
  4. Step 4: Simplify right side
    7,721.20x = 27,615,371.40
  5. Step 5: Solve for x
    x = 27,615,371.40/7,721.20
  6. Step 6: Final answer
    x = 3,576.56

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1.5x scale

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.