Home / 9,331.26-12,876.87-5,139.51

Finding the Fourth Proportional to 9,331.26, 12,876.87 and 5,139.51

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Solution

The fourth proportional to 9,331.26, 12,876.87 and 5,139.51 is: 7,092.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,331.26 : 12,876.87 = 5,139.51 : x
  2. Step 2: Convert to fraction form
    9,331.26/12,876.87 = 5,139.51/x
  3. Step 3: Cross multiply
    9,331.26x = 12,876.87 × 5,139.51
  4. Step 4: Simplify right side
    9,331.26x = 66,180,802.13
  5. Step 5: Solve for x
    x = 66,180,802.13/9,331.26
  6. Step 6: Final answer
    x = 7,092.38

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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.