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Finding the Fourth Proportional to 7,621.67, 11,349.22 and 7,341.42

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Solution

The fourth proportional to 7,621.67, 11,349.22 and 7,341.42 is: 10,931.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,621.67 : 11,349.22 = 7,341.42 : x
  2. Step 2: Convert to fraction form
    7,621.67/11,349.22 = 7,341.42/x
  3. Step 3: Cross multiply
    7,621.67x = 11,349.22 × 7,341.42
  4. Step 4: Simplify right side
    7,621.67x = 83,319,390.69
  5. Step 5: Solve for x
    x = 83,319,390.69/7,621.67
  6. Step 6: Final answer
    x = 10,931.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.