Home / 2,157.19-2,976.22-1,272.83

Finding the Fourth Proportional to 2,157.19, 2,976.22 and 1,272.83

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Solution

The fourth proportional to 2,157.19, 2,976.22 and 1,272.83 is: 1,756.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157.19 : 2,976.22 = 1,272.83 : x
  2. Step 2: Convert to fraction form
    2,157.19/2,976.22 = 1,272.83/x
  3. Step 3: Cross multiply
    2,157.19x = 2,976.22 × 1,272.83
  4. Step 4: Simplify right side
    2,157.19x = 3,788,208.81
  5. Step 5: Solve for x
    x = 3,788,208.81/2,157.19
  6. Step 6: Final answer
    x = 1,756.08

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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.