Home / 2,142.12-2,956.34-1,210.92

Finding the Fourth Proportional to 2,142.12, 2,956.34 and 1,210.92

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Solution

The fourth proportional to 2,142.12, 2,956.34 and 1,210.92 is: 1,671.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,142.12 : 2,956.34 = 1,210.92 : x
  2. Step 2: Convert to fraction form
    2,142.12/2,956.34 = 1,210.92/x
  3. Step 3: Cross multiply
    2,142.12x = 2,956.34 × 1,210.92
  4. Step 4: Simplify right side
    2,142.12x = 3,579,891.23
  5. Step 5: Solve for x
    x = 3,579,891.23/2,142.12
  6. Step 6: Final answer
    x = 1,671.19

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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.