Home / 1,820.52-2,509.68-1,260.78

Finding the Fourth Proportional to 1,820.52, 2,509.68 and 1,260.78

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Solution

The fourth proportional to 1,820.52, 2,509.68 and 1,260.78 is: 1,738.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,820.52 : 2,509.68 = 1,260.78 : x
  2. Step 2: Convert to fraction form
    1,820.52/2,509.68 = 1,260.78/x
  3. Step 3: Cross multiply
    1,820.52x = 2,509.68 × 1,260.78
  4. Step 4: Simplify right side
    1,820.52x = 3,164,154.35
  5. Step 5: Solve for x
    x = 3,164,154.35/1,820.52
  6. Step 6: Final answer
    x = 1,738.05

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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.