Home / 1,480.19-2,042.55-817.07

Finding the Fourth Proportional to 1,480.19, 2,042.55 and 817.07

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Solution

The fourth proportional to 1,480.19, 2,042.55 and 817.07 is: 1,127.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,480.19 : 2,042.55 = 817.07 : x
  2. Step 2: Convert to fraction form
    1,480.19/2,042.55 = 817.07/x
  3. Step 3: Cross multiply
    1,480.19x = 2,042.55 × 817.07
  4. Step 4: Simplify right side
    1,480.19x = 1,668,896.12
  5. Step 5: Solve for x
    x = 1,668,896.12/1,480.19
  6. Step 6: Final answer
    x = 1,127.49

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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.