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Finding the Fourth Proportional to 7,473.40, 11,210.10 and 7,311.40

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Solution

The fourth proportional to 7,473.40, 11,210.10 and 7,311.40 is: 10,967.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,473.40 : 11,210.10 = 7,311.40 : x
  2. Step 2: Convert to fraction form
    7,473.40/11,210.10 = 7,311.40/x
  3. Step 3: Cross multiply
    7,473.40x = 11,210.10 × 7,311.40
  4. Step 4: Simplify right side
    7,473.40x = 81,961,525.14
  5. Step 5: Solve for x
    x = 81,961,525.14/7,473.40
  6. Step 6: Final answer
    x = 10,967.10

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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.