Home / 2,079.56-2,869.36-1,217.05

Finding the Fourth Proportional to 2,079.56, 2,869.36 and 1,217.05

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Solution

The fourth proportional to 2,079.56, 2,869.36 and 1,217.05 is: 1,679.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.56 : 2,869.36 = 1,217.05 : x
  2. Step 2: Convert to fraction form
    2,079.56/2,869.36 = 1,217.05/x
  3. Step 3: Cross multiply
    2,079.56x = 2,869.36 × 1,217.05
  4. Step 4: Simplify right side
    2,079.56x = 3,492,151.22
  5. Step 5: Solve for x
    x = 3,492,151.22/2,079.56
  6. Step 6: Final answer
    x = 1,679.27

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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.