Home / 1,451.36-2,003.64-928.28

Finding the Fourth Proportional to 1,451.36, 2,003.64 and 928.28

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Solution

The fourth proportional to 1,451.36, 2,003.64 and 928.28 is: 1,281.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,451.36 : 2,003.64 = 928.28 : x
  2. Step 2: Convert to fraction form
    1,451.36/2,003.64 = 928.28/x
  3. Step 3: Cross multiply
    1,451.36x = 2,003.64 × 928.28
  4. Step 4: Simplify right side
    1,451.36x = 1,859,938.94
  5. Step 5: Solve for x
    x = 1,859,938.94/1,451.36
  6. Step 6: Final answer
    x = 1,281.51

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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.