Home / 1,345.12-2,017.44-371.09

Finding the Fourth Proportional to 1,345.12, 2,017.44 and 371.09

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Solution

The fourth proportional to 1,345.12, 2,017.44 and 371.09 is: 556.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345.12 : 2,017.44 = 371.09 : x
  2. Step 2: Convert to fraction form
    1,345.12/2,017.44 = 371.09/x
  3. Step 3: Cross multiply
    1,345.12x = 2,017.44 × 371.09
  4. Step 4: Simplify right side
    1,345.12x = 748,656.85
  5. Step 5: Solve for x
    x = 748,656.85/1,345.12
  6. Step 6: Final answer
    x = 556.57

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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.