Home / 2,858.46-3,943.80-1,863.38

Finding the Fourth Proportional to 2,858.46, 3,943.80 and 1,863.38

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Solution

The fourth proportional to 2,858.46, 3,943.80 and 1,863.38 is: 2,570.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,858.46 : 3,943.80 = 1,863.38 : x
  2. Step 2: Convert to fraction form
    2,858.46/3,943.80 = 1,863.38/x
  3. Step 3: Cross multiply
    2,858.46x = 3,943.80 × 1,863.38
  4. Step 4: Simplify right side
    2,858.46x = 7,348,798.04
  5. Step 5: Solve for x
    x = 7,348,798.04/2,858.46
  6. Step 6: Final answer
    x = 2,570.89

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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.