Home / 1,279.55-1,919.30-1,036.23

Finding the Fourth Proportional to 1,279.55, 1,919.30 and 1,036.23

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Solution

The fourth proportional to 1,279.55, 1,919.30 and 1,036.23 is: 1,554.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279.55 : 1,919.30 = 1,036.23 : x
  2. Step 2: Convert to fraction form
    1,279.55/1,919.30 = 1,036.23/x
  3. Step 3: Cross multiply
    1,279.55x = 1,919.30 × 1,036.23
  4. Step 4: Simplify right side
    1,279.55x = 1,988,831.06
  5. Step 5: Solve for x
    x = 1,988,831.06/1,279.55
  6. Step 6: Final answer
    x = 1,554.33

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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.