Home / 1,857.10-2,785.14-1,271.98

Finding the Fourth Proportional to 1,857.10, 2,785.14 and 1,271.98

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Solution

The fourth proportional to 1,857.10, 2,785.14 and 1,271.98 is: 1,907.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,857.10 : 2,785.14 = 1,271.98 : x
  2. Step 2: Convert to fraction form
    1,857.10/2,785.14 = 1,271.98/x
  3. Step 3: Cross multiply
    1,857.10x = 2,785.14 × 1,271.98
  4. Step 4: Simplify right side
    1,857.10x = 3,542,642.38
  5. Step 5: Solve for x
    x = 3,542,642.38/1,857.10
  6. Step 6: Final answer
    x = 1,907.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.