Home / 3,239.36-4,470.34-1,913.72

Finding the Fourth Proportional to 3,239.36, 4,470.34 and 1,913.72

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Solution

The fourth proportional to 3,239.36, 4,470.34 and 1,913.72 is: 2,640.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,239.36 : 4,470.34 = 1,913.72 : x
  2. Step 2: Convert to fraction form
    3,239.36/4,470.34 = 1,913.72/x
  3. Step 3: Cross multiply
    3,239.36x = 4,470.34 × 1,913.72
  4. Step 4: Simplify right side
    3,239.36x = 8,554,979.06
  5. Step 5: Solve for x
    x = 8,554,979.06/3,239.36
  6. Step 6: Final answer
    x = 2,640.95

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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.