Home / 9,118.25-12,583.28-5,139.36

Finding the Fourth Proportional to 9,118.25, 12,583.28 and 5,139.36

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Solution

The fourth proportional to 9,118.25, 12,583.28 and 5,139.36 is: 7,092.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,118.25 : 12,583.28 = 5,139.36 : x
  2. Step 2: Convert to fraction form
    9,118.25/12,583.28 = 5,139.36/x
  3. Step 3: Cross multiply
    9,118.25x = 12,583.28 × 5,139.36
  4. Step 4: Simplify right side
    9,118.25x = 64,670,036.44
  5. Step 5: Solve for x
    x = 64,670,036.44/9,118.25
  6. Step 6: Final answer
    x = 7,092.37

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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.