Home / 7,182.06-10,772.97-1,987.86

Finding the Fourth Proportional to 7,182.06, 10,772.97 and 1,987.86

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Solution

The fourth proportional to 7,182.06, 10,772.97 and 1,987.86 is: 2,981.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,182.06 : 10,772.97 = 1,987.86 : x
  2. Step 2: Convert to fraction form
    7,182.06/10,772.97 = 1,987.86/x
  3. Step 3: Cross multiply
    7,182.06x = 10,772.97 × 1,987.86
  4. Step 4: Simplify right side
    7,182.06x = 21,415,156.14
  5. Step 5: Solve for x
    x = 21,415,156.14/7,182.06
  6. Step 6: Final answer
    x = 2,981.76

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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.