Home / 3,118.32-4,303.20-1,721.04

Finding the Fourth Proportional to 3,118.32, 4,303.20 and 1,721.04

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Solution

The fourth proportional to 3,118.32, 4,303.20 and 1,721.04 is: 2,374.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.32 : 4,303.20 = 1,721.04 : x
  2. Step 2: Convert to fraction form
    3,118.32/4,303.20 = 1,721.04/x
  3. Step 3: Cross multiply
    3,118.32x = 4,303.20 × 1,721.04
  4. Step 4: Simplify right side
    3,118.32x = 7,405,979.33
  5. Step 5: Solve for x
    x = 7,405,979.33/3,118.32
  6. Step 6: Final answer
    x = 2,374.99

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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.