Home / 2,114.91-2,919.89-1,358.99

Finding the Fourth Proportional to 2,114.91, 2,919.89 and 1,358.99

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Solution

The fourth proportional to 2,114.91, 2,919.89 and 1,358.99 is: 1,876.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,114.91 : 2,919.89 = 1,358.99 : x
  2. Step 2: Convert to fraction form
    2,114.91/2,919.89 = 1,358.99/x
  3. Step 3: Cross multiply
    2,114.91x = 2,919.89 × 1,358.99
  4. Step 4: Simplify right side
    2,114.91x = 3,968,117.48
  5. Step 5: Solve for x
    x = 3,968,117.48/2,114.91
  6. Step 6: Final answer
    x = 1,876.26

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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.