Home / 5,318.11-7,977.55-1,620.33

Finding the Fourth Proportional to 5,318.11, 7,977.55 and 1,620.33

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Solution

The fourth proportional to 5,318.11, 7,977.55 and 1,620.33 is: 2,430.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318.11 : 7,977.55 = 1,620.33 : x
  2. Step 2: Convert to fraction form
    5,318.11/7,977.55 = 1,620.33/x
  3. Step 3: Cross multiply
    5,318.11x = 7,977.55 × 1,620.33
  4. Step 4: Simplify right side
    5,318.11x = 12,926,263.59
  5. Step 5: Solve for x
    x = 12,926,263.59/5,318.11
  6. Step 6: Final answer
    x = 2,430.61

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Similar ratio
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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.