Home / 9,388.23-12,955.77-5,139.69

Finding the Fourth Proportional to 9,388.23, 12,955.77 and 5,139.69

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Solution

The fourth proportional to 9,388.23, 12,955.77 and 5,139.69 is: 7,092.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,388.23 : 12,955.77 = 5,139.69 : x
  2. Step 2: Convert to fraction form
    9,388.23/12,955.77 = 5,139.69/x
  3. Step 3: Cross multiply
    9,388.23x = 12,955.77 × 5,139.69
  4. Step 4: Simplify right side
    9,388.23x = 66,588,641.51
  5. Step 5: Solve for x
    x = 66,588,641.51/9,388.23
  6. Step 6: Final answer
    x = 7,092.78

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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.