Home / 3,118.13-4,303.02-1,720.88

Finding the Fourth Proportional to 3,118.13, 4,303.02 and 1,720.88

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Solution

The fourth proportional to 3,118.13, 4,303.02 and 1,720.88 is: 2,374.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.13 : 4,303.02 = 1,720.88 : x
  2. Step 2: Convert to fraction form
    3,118.13/4,303.02 = 1,720.88/x
  3. Step 3: Cross multiply
    3,118.13x = 4,303.02 × 1,720.88
  4. Step 4: Simplify right side
    3,118.13x = 7,404,959.54
  5. Step 5: Solve for x
    x = 7,404,959.54/3,118.13
  6. Step 6: Final answer
    x = 2,374.81

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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.