Home / 1,642.07-2,461.87-1,057.72

Finding the Fourth Proportional to 1,642.07, 2,461.87 and 1,057.72

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Solution

The fourth proportional to 1,642.07, 2,461.87 and 1,057.72 is: 1,585.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,642.07 : 2,461.87 = 1,057.72 : x
  2. Step 2: Convert to fraction form
    1,642.07/2,461.87 = 1,057.72/x
  3. Step 3: Cross multiply
    1,642.07x = 2,461.87 × 1,057.72
  4. Step 4: Simplify right side
    1,642.07x = 2,603,969.14
  5. Step 5: Solve for x
    x = 2,603,969.14/1,642.07
  6. Step 6: Final answer
    x = 1,585.78

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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.