Home / 2,275.05-3,139.52-1,489.08

Finding the Fourth Proportional to 2,275.05, 3,139.52 and 1,489.08

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Solution

The fourth proportional to 2,275.05, 3,139.52 and 1,489.08 is: 2,054.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.05 : 3,139.52 = 1,489.08 : x
  2. Step 2: Convert to fraction form
    2,275.05/3,139.52 = 1,489.08/x
  3. Step 3: Cross multiply
    2,275.05x = 3,139.52 × 1,489.08
  4. Step 4: Simplify right side
    2,275.05x = 4,674,989.00
  5. Step 5: Solve for x
    x = 4,674,989.00/2,275.05
  6. Step 6: Final answer
    x = 2,054.90

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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.