Home / 1,785.78-2,681.01-1,542.15

Finding the Fourth Proportional to 1,785.78, 2,681.01 and 1,542.15

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Solution

The fourth proportional to 1,785.78, 2,681.01 and 1,542.15 is: 2,315.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,785.78 : 2,681.01 = 1,542.15 : x
  2. Step 2: Convert to fraction form
    1,785.78/2,681.01 = 1,542.15/x
  3. Step 3: Cross multiply
    1,785.78x = 2,681.01 × 1,542.15
  4. Step 4: Simplify right side
    1,785.78x = 4,134,519.57
  5. Step 5: Solve for x
    x = 4,134,519.57/1,785.78
  6. Step 6: Final answer
    x = 2,315.25

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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.