Home / 5,151.09-7,726.49-2,187.64

Finding the Fourth Proportional to 5,151.09, 7,726.49 and 2,187.64

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Solution

The fourth proportional to 5,151.09, 7,726.49 and 2,187.64 is: 3,281.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,151.09 : 7,726.49 = 2,187.64 : x
  2. Step 2: Convert to fraction form
    5,151.09/7,726.49 = 2,187.64/x
  3. Step 3: Cross multiply
    5,151.09x = 7,726.49 × 2,187.64
  4. Step 4: Simplify right side
    5,151.09x = 16,902,785.51
  5. Step 5: Solve for x
    x = 16,902,785.51/5,151.09
  6. Step 6: Final answer
    x = 3,281.40

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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.