Home / 2,099.90-2,898.20-1,216.22

Finding the Fourth Proportional to 2,099.90, 2,898.20 and 1,216.22

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Solution

The fourth proportional to 2,099.90, 2,898.20 and 1,216.22 is: 1,678.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,099.90 : 2,898.20 = 1,216.22 : x
  2. Step 2: Convert to fraction form
    2,099.90/2,898.20 = 1,216.22/x
  3. Step 3: Cross multiply
    2,099.90x = 2,898.20 × 1,216.22
  4. Step 4: Simplify right side
    2,099.90x = 3,524,837.35
  5. Step 5: Solve for x
    x = 3,524,837.35/2,099.90
  6. Step 6: Final answer
    x = 1,678.57

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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.