Home / 1,729.44-2,385.36-1,205.28

Finding the Fourth Proportional to 1,729.44, 2,385.36 and 1,205.28

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Solution

The fourth proportional to 1,729.44, 2,385.36 and 1,205.28 is: 1,662.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,729.44 : 2,385.36 = 1,205.28 : x
  2. Step 2: Convert to fraction form
    1,729.44/2,385.36 = 1,205.28/x
  3. Step 3: Cross multiply
    1,729.44x = 2,385.36 × 1,205.28
  4. Step 4: Simplify right side
    1,729.44x = 2,875,026.70
  5. Step 5: Solve for x
    x = 2,875,026.70/1,729.44
  6. Step 6: Final answer
    x = 1,662.40

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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.