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Finding the Fourth Proportional to 7,435.61, 11,155.11 and 4,318.22

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Solution

The fourth proportional to 7,435.61, 11,155.11 and 4,318.22 is: 6,478.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,435.61 : 11,155.11 = 4,318.22 : x
  2. Step 2: Convert to fraction form
    7,435.61/11,155.11 = 4,318.22/x
  3. Step 3: Cross multiply
    7,435.61x = 11,155.11 × 4,318.22
  4. Step 4: Simplify right side
    7,435.61x = 48,170,141.74
  5. Step 5: Solve for x
    x = 48,170,141.74/7,435.61
  6. Step 6: Final answer
    x = 6,478.31

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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.