Home / 1,857.24-2,785.90-1,040.70

Finding the Fourth Proportional to 1,857.24, 2,785.90 and 1,040.70

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Solution

The fourth proportional to 1,857.24, 2,785.90 and 1,040.70 is: 1,561.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,857.24 : 2,785.90 = 1,040.70 : x
  2. Step 2: Convert to fraction form
    1,857.24/2,785.90 = 1,040.70/x
  3. Step 3: Cross multiply
    1,857.24x = 2,785.90 × 1,040.70
  4. Step 4: Simplify right side
    1,857.24x = 2,899,286.13
  5. Step 5: Solve for x
    x = 2,899,286.13/1,857.24
  6. Step 6: Final answer
    x = 1,561.07

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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.