Home / 1,820.16-2,511.92-1,377.28

Finding the Fourth Proportional to 1,820.16, 2,511.92 and 1,377.28

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Solution

The fourth proportional to 1,820.16, 2,511.92 and 1,377.28 is: 1,900.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,820.16 : 2,511.92 = 1,377.28 : x
  2. Step 2: Convert to fraction form
    1,820.16/2,511.92 = 1,377.28/x
  3. Step 3: Cross multiply
    1,820.16x = 2,511.92 × 1,377.28
  4. Step 4: Simplify right side
    1,820.16x = 3,459,617.18
  5. Step 5: Solve for x
    x = 3,459,617.18/1,820.16
  6. Step 6: Final answer
    x = 1,900.72

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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.