Home / 7,137.13-10,690.09-3,621.08

Finding the Fourth Proportional to 7,137.13, 10,690.09 and 3,621.08

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Solution

The fourth proportional to 7,137.13, 10,690.09 and 3,621.08 is: 5,423.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,137.13 : 10,690.09 = 3,621.08 : x
  2. Step 2: Convert to fraction form
    7,137.13/10,690.09 = 3,621.08/x
  3. Step 3: Cross multiply
    7,137.13x = 10,690.09 × 3,621.08
  4. Step 4: Simplify right side
    7,137.13x = 38,709,608.59
  5. Step 5: Solve for x
    x = 38,709,608.59/7,137.13
  6. Step 6: Final answer
    x = 5,423.70

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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.