Home / 7,171.27-9,899.67-4,785.19

Finding the Fourth Proportional to 7,171.27, 9,899.67 and 4,785.19

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Solution

The fourth proportional to 7,171.27, 9,899.67 and 4,785.19 is: 6,605.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,171.27 : 9,899.67 = 4,785.19 : x
  2. Step 2: Convert to fraction form
    7,171.27/9,899.67 = 4,785.19/x
  3. Step 3: Cross multiply
    7,171.27x = 9,899.67 × 4,785.19
  4. Step 4: Simplify right side
    7,171.27x = 47,371,801.89
  5. Step 5: Solve for x
    x = 47,371,801.89/7,171.27
  6. Step 6: Final answer
    x = 6,605.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.