Home / 3,018.47-4,165.20-1,691.88

Finding the Fourth Proportional to 3,018.47, 4,165.20 and 1,691.88

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Solution

The fourth proportional to 3,018.47, 4,165.20 and 1,691.88 is: 2,334.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,018.47 : 4,165.20 = 1,691.88 : x
  2. Step 2: Convert to fraction form
    3,018.47/4,165.20 = 1,691.88/x
  3. Step 3: Cross multiply
    3,018.47x = 4,165.20 × 1,691.88
  4. Step 4: Simplify right side
    3,018.47x = 7,047,018.58
  5. Step 5: Solve for x
    x = 7,047,018.58/3,018.47
  6. Step 6: Final answer
    x = 2,334.64

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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.