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Finding the Fourth Proportional to 7,344.60, 11,016.90 and 4,421.40

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Solution

The fourth proportional to 7,344.60, 11,016.90 and 4,421.40 is: 6,632.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,344.60 : 11,016.90 = 4,421.40 : x
  2. Step 2: Convert to fraction form
    7,344.60/11,016.90 = 4,421.40/x
  3. Step 3: Cross multiply
    7,344.60x = 11,016.90 × 4,421.40
  4. Step 4: Simplify right side
    7,344.60x = 48,710,121.66
  5. Step 5: Solve for x
    x = 48,710,121.66/7,344.60
  6. Step 6: Final answer
    x = 6,632.10

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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.