Home / 2,145.06-2,959.64-1,260.68

Finding the Fourth Proportional to 2,145.06, 2,959.64 and 1,260.68

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Solution

The fourth proportional to 2,145.06, 2,959.64 and 1,260.68 is: 1,739.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.06 : 2,959.64 = 1,260.68 : x
  2. Step 2: Convert to fraction form
    2,145.06/2,959.64 = 1,260.68/x
  3. Step 3: Cross multiply
    2,145.06x = 2,959.64 × 1,260.68
  4. Step 4: Simplify right side
    2,145.06x = 3,731,158.96
  5. Step 5: Solve for x
    x = 3,731,158.96/2,145.06
  6. Step 6: Final answer
    x = 1,739.42

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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.