Home / 2,116.42-2,920.44-1,172.19

Finding the Fourth Proportional to 2,116.42, 2,920.44 and 1,172.19

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Solution

The fourth proportional to 2,116.42, 2,920.44 and 1,172.19 is: 1,617.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.42 : 2,920.44 = 1,172.19 : x
  2. Step 2: Convert to fraction form
    2,116.42/2,920.44 = 1,172.19/x
  3. Step 3: Cross multiply
    2,116.42x = 2,920.44 × 1,172.19
  4. Step 4: Simplify right side
    2,116.42x = 3,423,320.16
  5. Step 5: Solve for x
    x = 3,423,320.16/2,116.42
  6. Step 6: Final answer
    x = 1,617.50

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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.