Home / 2,854.24-3,934.35-2,145.06

Finding the Fourth Proportional to 2,854.24, 3,934.35 and 2,145.06

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Solution

The fourth proportional to 2,854.24, 3,934.35 and 2,145.06 is: 2,956.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,854.24 : 3,934.35 = 2,145.06 : x
  2. Step 2: Convert to fraction form
    2,854.24/3,934.35 = 2,145.06/x
  3. Step 3: Cross multiply
    2,854.24x = 3,934.35 × 2,145.06
  4. Step 4: Simplify right side
    2,854.24x = 8,439,416.81
  5. Step 5: Solve for x
    x = 8,439,416.81/2,854.24
  6. Step 6: Final answer
    x = 2,956.80

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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.