Home / 1,820.05-2,511.08-1,121.83

Finding the Fourth Proportional to 1,820.05, 2,511.08 and 1,121.83

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Solution

The fourth proportional to 1,820.05, 2,511.08 and 1,121.83 is: 1,547.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,820.05 : 2,511.08 = 1,121.83 : x
  2. Step 2: Convert to fraction form
    1,820.05/2,511.08 = 1,121.83/x
  3. Step 3: Cross multiply
    1,820.05x = 2,511.08 × 1,121.83
  4. Step 4: Simplify right side
    1,820.05x = 2,817,004.88
  5. Step 5: Solve for x
    x = 2,817,004.88/1,820.05
  6. Step 6: Final answer
    x = 1,547.76

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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.