Home / 1,447.02-2,171.60-1,080.70

Finding the Fourth Proportional to 1,447.02, 2,171.60 and 1,080.70

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Solution

The fourth proportional to 1,447.02, 2,171.60 and 1,080.70 is: 1,621.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,447.02 : 2,171.60 = 1,080.70 : x
  2. Step 2: Convert to fraction form
    1,447.02/2,171.60 = 1,080.70/x
  3. Step 3: Cross multiply
    1,447.02x = 2,171.60 × 1,080.70
  4. Step 4: Simplify right side
    1,447.02x = 2,346,848.12
  5. Step 5: Solve for x
    x = 2,346,848.12/1,447.02
  6. Step 6: Final answer
    x = 1,621.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.