Home / 1,182.48-1,628.46-1,078.62

Finding the Fourth Proportional to 1,182.48, 1,628.46 and 1,078.62

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Solution

The fourth proportional to 1,182.48, 1,628.46 and 1,078.62 is: 1,485.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,182.48 : 1,628.46 = 1,078.62 : x
  2. Step 2: Convert to fraction form
    1,182.48/1,628.46 = 1,078.62/x
  3. Step 3: Cross multiply
    1,182.48x = 1,628.46 × 1,078.62
  4. Step 4: Simplify right side
    1,182.48x = 1,756,489.53
  5. Step 5: Solve for x
    x = 1,756,489.53/1,182.48
  6. Step 6: Final answer
    x = 1,485.43

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1.5x scale

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.