Home / 2,113.13-3,171.13-745.13

Finding the Fourth Proportional to 2,113.13, 3,171.13 and 745.13

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Solution

The fourth proportional to 2,113.13, 3,171.13 and 745.13 is: 1,118.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,113.13 : 3,171.13 = 745.13 : x
  2. Step 2: Convert to fraction form
    2,113.13/3,171.13 = 745.13/x
  3. Step 3: Cross multiply
    2,113.13x = 3,171.13 × 745.13
  4. Step 4: Simplify right side
    2,113.13x = 2,362,886.38
  5. Step 5: Solve for x
    x = 2,362,886.38/2,113.13
  6. Step 6: Final answer
    x = 1,118.20

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1.5x scale

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.