Home / 1,860.20-2,790.32-473.54

Finding the Fourth Proportional to 1,860.20, 2,790.32 and 473.54

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Solution

The fourth proportional to 1,860.20, 2,790.32 and 473.54 is: 710.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,860.20 : 2,790.32 = 473.54 : x
  2. Step 2: Convert to fraction form
    1,860.20/2,790.32 = 473.54/x
  3. Step 3: Cross multiply
    1,860.20x = 2,790.32 × 473.54
  4. Step 4: Simplify right side
    1,860.20x = 1,321,315.60
  5. Step 5: Solve for x
    x = 1,321,315.60/1,860.20
  6. Step 6: Final answer
    x = 710.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.