Home / 2,116.19-2,920.27-1,172.02

Finding the Fourth Proportional to 2,116.19, 2,920.27 and 1,172.02

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Solution

The fourth proportional to 2,116.19, 2,920.27 and 1,172.02 is: 1,617.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.19 : 2,920.27 = 1,172.02 : x
  2. Step 2: Convert to fraction form
    2,116.19/2,920.27 = 1,172.02/x
  3. Step 3: Cross multiply
    2,116.19x = 2,920.27 × 1,172.02
  4. Step 4: Simplify right side
    2,116.19x = 3,422,608.99
  5. Step 5: Solve for x
    x = 3,422,608.99/2,116.19
  6. Step 6: Final answer
    x = 1,617.34

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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.