Home / 3,118.16-4,303.06-1,720.91

Finding the Fourth Proportional to 3,118.16, 4,303.06 and 1,720.91

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Solution

The fourth proportional to 3,118.16, 4,303.06 and 1,720.91 is: 2,374.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.16 : 4,303.06 = 1,720.91 : x
  2. Step 2: Convert to fraction form
    3,118.16/4,303.06 = 1,720.91/x
  3. Step 3: Cross multiply
    3,118.16x = 4,303.06 × 1,720.91
  4. Step 4: Simplify right side
    3,118.16x = 7,405,174.68
  5. Step 5: Solve for x
    x = 7,405,174.68/3,118.16
  6. Step 6: Final answer
    x = 2,374.85

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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.