Home / 2,156.46-2,975.54-1,272.14

Finding the Fourth Proportional to 2,156.46, 2,975.54 and 1,272.14

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Solution

The fourth proportional to 2,156.46, 2,975.54 and 1,272.14 is: 1,755.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156.46 : 2,975.54 = 1,272.14 : x
  2. Step 2: Convert to fraction form
    2,156.46/2,975.54 = 1,272.14/x
  3. Step 3: Cross multiply
    2,156.46x = 2,975.54 × 1,272.14
  4. Step 4: Simplify right side
    2,156.46x = 3,785,303.46
  5. Step 5: Solve for x
    x = 3,785,303.46/2,156.46
  6. Step 6: Final answer
    x = 1,755.33

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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.