Home / 7,579.21-11,359.59-3,418.12

Finding the Fourth Proportional to 7,579.21, 11,359.59 and 3,418.12

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Solution

The fourth proportional to 7,579.21, 11,359.59 and 3,418.12 is: 5,123.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,579.21 : 11,359.59 = 3,418.12 : x
  2. Step 2: Convert to fraction form
    7,579.21/11,359.59 = 3,418.12/x
  3. Step 3: Cross multiply
    7,579.21x = 11,359.59 × 3,418.12
  4. Step 4: Simplify right side
    7,579.21x = 38,828,441.77
  5. Step 5: Solve for x
    x = 38,828,441.77/7,579.21
  6. Step 6: Final answer
    x = 5,123.02

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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.