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Finding the Fourth Proportional to 7,621.03, 11,488.67 and 7,113.01

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Solution

The fourth proportional to 7,621.03, 11,488.67 and 7,113.01 is: 10,722.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,621.03 : 11,488.67 = 7,113.01 : x
  2. Step 2: Convert to fraction form
    7,621.03/11,488.67 = 7,113.01/x
  3. Step 3: Cross multiply
    7,621.03x = 11,488.67 × 7,113.01
  4. Step 4: Simplify right side
    7,621.03x = 81,719,008.53
  5. Step 5: Solve for x
    x = 81,719,008.53/7,621.03
  6. Step 6: Final answer
    x = 10,722.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.