Home / 1,285.11-1,927.04-635.09

Finding the Fourth Proportional to 1,285.11, 1,927.04 and 635.09

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Solution

The fourth proportional to 1,285.11, 1,927.04 and 635.09 is: 952.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285.11 : 1,927.04 = 635.09 : x
  2. Step 2: Convert to fraction form
    1,285.11/1,927.04 = 635.09/x
  3. Step 3: Cross multiply
    1,285.11x = 1,927.04 × 635.09
  4. Step 4: Simplify right side
    1,285.11x = 1,223,831.02
  5. Step 5: Solve for x
    x = 1,223,831.02/1,285.11
  6. Step 6: Final answer
    x = 952.32

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1.5x scale

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.