Home / 2,139.08-3,208.40-1,450.17

Finding the Fourth Proportional to 2,139.08, 3,208.40 and 1,450.17

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Solution

The fourth proportional to 2,139.08, 3,208.40 and 1,450.17 is: 2,175.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,139.08 : 3,208.40 = 1,450.17 : x
  2. Step 2: Convert to fraction form
    2,139.08/3,208.40 = 1,450.17/x
  3. Step 3: Cross multiply
    2,139.08x = 3,208.40 × 1,450.17
  4. Step 4: Simplify right side
    2,139.08x = 4,652,718.18
  5. Step 5: Solve for x
    x = 4,652,718.18/2,139.08
  6. Step 6: Final answer
    x = 2,175.11

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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.