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Finding the Fourth Proportional to 7,441.80, 11,162.70 and 7,320.30

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Solution

The fourth proportional to 7,441.80, 11,162.70 and 7,320.30 is: 10,980.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,441.80 : 11,162.70 = 7,320.30 : x
  2. Step 2: Convert to fraction form
    7,441.80/11,162.70 = 7,320.30/x
  3. Step 3: Cross multiply
    7,441.80x = 11,162.70 × 7,320.30
  4. Step 4: Simplify right side
    7,441.80x = 81,714,312.81
  5. Step 5: Solve for x
    x = 81,714,312.81/7,441.80
  6. Step 6: Final answer
    x = 10,980.45

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1.5x scale

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.