Home / 7,415.12-11,122.68-3,031.54

Finding the Fourth Proportional to 7,415.12, 11,122.68 and 3,031.54

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Solution

The fourth proportional to 7,415.12, 11,122.68 and 3,031.54 is: 4,547.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,415.12 : 11,122.68 = 3,031.54 : x
  2. Step 2: Convert to fraction form
    7,415.12/11,122.68 = 3,031.54/x
  3. Step 3: Cross multiply
    7,415.12x = 11,122.68 × 3,031.54
  4. Step 4: Simplify right side
    7,415.12x = 33,718,849.33
  5. Step 5: Solve for x
    x = 33,718,849.33/7,415.12
  6. Step 6: Final answer
    x = 4,547.31

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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.