Home / 1,728.39-2,579.32-1,543.85

Finding the Fourth Proportional to 1,728.39, 2,579.32 and 1,543.85

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Solution

The fourth proportional to 1,728.39, 2,579.32 and 1,543.85 is: 2,303.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728.39 : 2,579.32 = 1,543.85 : x
  2. Step 2: Convert to fraction form
    1,728.39/2,579.32 = 1,543.85/x
  3. Step 3: Cross multiply
    1,728.39x = 2,579.32 × 1,543.85
  4. Step 4: Simplify right side
    1,728.39x = 3,982,083.18
  5. Step 5: Solve for x
    x = 3,982,083.18/1,728.39
  6. Step 6: Final answer
    x = 2,303.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.