Home / 2,180.83-3,009.95-1,297.12

Finding the Fourth Proportional to 2,180.83, 3,009.95 and 1,297.12

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Solution

The fourth proportional to 2,180.83, 3,009.95 and 1,297.12 is: 1,790.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,180.83 : 3,009.95 = 1,297.12 : x
  2. Step 2: Convert to fraction form
    2,180.83/3,009.95 = 1,297.12/x
  3. Step 3: Cross multiply
    2,180.83x = 3,009.95 × 1,297.12
  4. Step 4: Simplify right side
    2,180.83x = 3,904,266.34
  5. Step 5: Solve for x
    x = 3,904,266.34/2,180.83
  6. Step 6: Final answer
    x = 1,790.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.