Home / 1,820.21-2,511.62-1,053.65

Finding the Fourth Proportional to 1,820.21, 2,511.62 and 1,053.65

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Solution

The fourth proportional to 1,820.21, 2,511.62 and 1,053.65 is: 1,453.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,820.21 : 2,511.62 = 1,053.65 : x
  2. Step 2: Convert to fraction form
    1,820.21/2,511.62 = 1,053.65/x
  3. Step 3: Cross multiply
    1,820.21x = 2,511.62 × 1,053.65
  4. Step 4: Simplify right side
    1,820.21x = 2,646,368.41
  5. Step 5: Solve for x
    x = 2,646,368.41/1,820.21
  6. Step 6: Final answer
    x = 1,453.88

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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.