Home / 7,478.91-11,218.37-3,528.87

Finding the Fourth Proportional to 7,478.91, 11,218.37 and 3,528.87

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Solution

The fourth proportional to 7,478.91, 11,218.37 and 3,528.87 is: 5,293.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,478.91 : 11,218.37 = 3,528.87 : x
  2. Step 2: Convert to fraction form
    7,478.91/11,218.37 = 3,528.87/x
  3. Step 3: Cross multiply
    7,478.91x = 11,218.37 × 3,528.87
  4. Step 4: Simplify right side
    7,478.91x = 39,588,151.70
  5. Step 5: Solve for x
    x = 39,588,151.70/7,478.91
  6. Step 6: Final answer
    x = 5,293.31

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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.