Home / 2,116.12-2,920.16-1,231.92

Finding the Fourth Proportional to 2,116.12, 2,920.16 and 1,231.92

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Solution

The fourth proportional to 2,116.12, 2,920.16 and 1,231.92 is: 1,700.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.12 : 2,920.16 = 1,231.92 : x
  2. Step 2: Convert to fraction form
    2,116.12/2,920.16 = 1,231.92/x
  3. Step 3: Cross multiply
    2,116.12x = 2,920.16 × 1,231.92
  4. Step 4: Simplify right side
    2,116.12x = 3,597,403.51
  5. Step 5: Solve for x
    x = 3,597,403.51/2,116.12
  6. Step 6: Final answer
    x = 1,700.00

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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.