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Finding the Fourth Proportional to 7,357.20, 10,989.02 and 6,320.20

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Solution

The fourth proportional to 7,357.20, 10,989.02 and 6,320.20 is: 9,440.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,357.20 : 10,989.02 = 6,320.20 : x
  2. Step 2: Convert to fraction form
    7,357.20/10,989.02 = 6,320.20/x
  3. Step 3: Cross multiply
    7,357.20x = 10,989.02 × 6,320.20
  4. Step 4: Simplify right side
    7,357.20x = 69,452,768.83
  5. Step 5: Solve for x
    x = 69,452,768.83/7,357.20
  6. Step 6: Final answer
    x = 9,440.11

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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.