Home / 1,416.28-2,123.52-1,221.36

Finding the Fourth Proportional to 1,416.28, 2,123.52 and 1,221.36

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Solution

The fourth proportional to 1,416.28, 2,123.52 and 1,221.36 is: 1,831.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,416.28 : 2,123.52 = 1,221.36 : x
  2. Step 2: Convert to fraction form
    1,416.28/2,123.52 = 1,221.36/x
  3. Step 3: Cross multiply
    1,416.28x = 2,123.52 × 1,221.36
  4. Step 4: Simplify right side
    1,416.28x = 2,593,582.39
  5. Step 5: Solve for x
    x = 2,593,582.39/1,416.28
  6. Step 6: Final answer
    x = 1,831.26

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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.