Home / 1,820.16-2,509.38-1,189.44

Finding the Fourth Proportional to 1,820.16, 2,509.38 and 1,189.44

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Solution

The fourth proportional to 1,820.16, 2,509.38 and 1,189.44 is: 1,639.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,820.16 : 2,509.38 = 1,189.44 : x
  2. Step 2: Convert to fraction form
    1,820.16/2,509.38 = 1,189.44/x
  3. Step 3: Cross multiply
    1,820.16x = 2,509.38 × 1,189.44
  4. Step 4: Simplify right side
    1,820.16x = 2,984,756.95
  5. Step 5: Solve for x
    x = 2,984,756.95/1,820.16
  6. Step 6: Final answer
    x = 1,639.83

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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.