Home / 2,814.57-3,884.08-1,555.71

Finding the Fourth Proportional to 2,814.57, 3,884.08 and 1,555.71

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Solution

The fourth proportional to 2,814.57, 3,884.08 and 1,555.71 is: 2,146.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,814.57 : 3,884.08 = 1,555.71 : x
  2. Step 2: Convert to fraction form
    2,814.57/3,884.08 = 1,555.71/x
  3. Step 3: Cross multiply
    2,814.57x = 3,884.08 × 1,555.71
  4. Step 4: Simplify right side
    2,814.57x = 6,042,502.10
  5. Step 5: Solve for x
    x = 6,042,502.10/2,814.57
  6. Step 6: Final answer
    x = 2,146.87

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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.