Home / 7,458.09-11,186.29-1,911.48

Finding the Fourth Proportional to 7,458.09, 11,186.29 and 1,911.48

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Solution

The fourth proportional to 7,458.09, 11,186.29 and 1,911.48 is: 2,867.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,458.09 : 11,186.29 = 1,911.48 : x
  2. Step 2: Convert to fraction form
    7,458.09/11,186.29 = 1,911.48/x
  3. Step 3: Cross multiply
    7,458.09x = 11,186.29 × 1,911.48
  4. Step 4: Simplify right side
    7,458.09x = 21,382,369.61
  5. Step 5: Solve for x
    x = 21,382,369.61/7,458.09
  6. Step 6: Final answer
    x = 2,867.00

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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.