Home / 1,661.10-2,290.62-1,101.38

Finding the Fourth Proportional to 1,661.10, 2,290.62 and 1,101.38

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Solution

The fourth proportional to 1,661.10, 2,290.62 and 1,101.38 is: 1,518.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,661.10 : 2,290.62 = 1,101.38 : x
  2. Step 2: Convert to fraction form
    1,661.10/2,290.62 = 1,101.38/x
  3. Step 3: Cross multiply
    1,661.10x = 2,290.62 × 1,101.38
  4. Step 4: Simplify right side
    1,661.10x = 2,522,831.60
  5. Step 5: Solve for x
    x = 2,522,831.60/1,661.10
  6. Step 6: Final answer
    x = 1,518.77

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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.