Home / 7,415.32-11,122.14-1,868.66

Finding the Fourth Proportional to 7,415.32, 11,122.14 and 1,868.66

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Solution

The fourth proportional to 7,415.32, 11,122.14 and 1,868.66 is: 2,802.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,415.32 : 11,122.14 = 1,868.66 : x
  2. Step 2: Convert to fraction form
    7,415.32/11,122.14 = 1,868.66/x
  3. Step 3: Cross multiply
    7,415.32x = 11,122.14 × 1,868.66
  4. Step 4: Simplify right side
    7,415.32x = 20,783,498.13
  5. Step 5: Solve for x
    x = 20,783,498.13/7,415.32
  6. Step 6: Final answer
    x = 2,802.78

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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.