Home / 8,187.72-11,290.09-5,530.51

Finding the Fourth Proportional to 8,187.72, 11,290.09 and 5,530.51

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Solution

The fourth proportional to 8,187.72, 11,290.09 and 5,530.51 is: 7,626.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,187.72 : 11,290.09 = 5,530.51 : x
  2. Step 2: Convert to fraction form
    8,187.72/11,290.09 = 5,530.51/x
  3. Step 3: Cross multiply
    8,187.72x = 11,290.09 × 5,530.51
  4. Step 4: Simplify right side
    8,187.72x = 62,439,955.65
  5. Step 5: Solve for x
    x = 62,439,955.65/8,187.72
  6. Step 6: Final answer
    x = 7,626.05

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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.