Home / 1,671.79-2,305.67-1,253.12

Finding the Fourth Proportional to 1,671.79, 2,305.67 and 1,253.12

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Solution

The fourth proportional to 1,671.79, 2,305.67 and 1,253.12 is: 1,728.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,671.79 : 2,305.67 = 1,253.12 : x
  2. Step 2: Convert to fraction form
    1,671.79/2,305.67 = 1,253.12/x
  3. Step 3: Cross multiply
    1,671.79x = 2,305.67 × 1,253.12
  4. Step 4: Simplify right side
    1,671.79x = 2,889,274.92
  5. Step 5: Solve for x
    x = 2,889,274.92/1,671.79
  6. Step 6: Final answer
    x = 1,728.26

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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.