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Finding the Fourth Proportional to 7,236.80, 9,982.40 and 4,582.40

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Solution

The fourth proportional to 7,236.80, 9,982.40 and 4,582.40 is: 6,320.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,236.80 : 9,982.40 = 4,582.40 : x
  2. Step 2: Convert to fraction form
    7,236.80/9,982.40 = 4,582.40/x
  3. Step 3: Cross multiply
    7,236.80x = 9,982.40 × 4,582.40
  4. Step 4: Simplify right side
    7,236.80x = 45,743,349.76
  5. Step 5: Solve for x
    x = 45,743,349.76/7,236.80
  6. Step 6: Final answer
    x = 6,320.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.