Home / 3,119.63-4,305.08-1,722.47

Finding the Fourth Proportional to 3,119.63, 4,305.08 and 1,722.47

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Solution

The fourth proportional to 3,119.63, 4,305.08 and 1,722.47 is: 2,377.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.63 : 4,305.08 = 1,722.47 : x
  2. Step 2: Convert to fraction form
    3,119.63/4,305.08 = 1,722.47/x
  3. Step 3: Cross multiply
    3,119.63x = 4,305.08 × 1,722.47
  4. Step 4: Simplify right side
    3,119.63x = 7,415,353.93
  5. Step 5: Solve for x
    x = 7,415,353.93/3,119.63
  6. Step 6: Final answer
    x = 2,377.00

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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.