Home / 1,820.66-2,512.61-1,377.78

Finding the Fourth Proportional to 1,820.66, 2,512.61 and 1,377.78

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Solution

The fourth proportional to 1,820.66, 2,512.61 and 1,377.78 is: 1,901.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,820.66 : 2,512.61 = 1,377.78 : x
  2. Step 2: Convert to fraction form
    1,820.66/2,512.61 = 1,377.78/x
  3. Step 3: Cross multiply
    1,820.66x = 2,512.61 × 1,377.78
  4. Step 4: Simplify right side
    1,820.66x = 3,461,823.81
  5. Step 5: Solve for x
    x = 3,461,823.81/1,820.66
  6. Step 6: Final answer
    x = 1,901.41

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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.