Home / 1,945.64-2,919-1,080.56

Finding the Fourth Proportional to 1,945.64, 2,919 and 1,080.56

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Solution

The fourth proportional to 1,945.64, 2,919 and 1,080.56 is: 1,621.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.64 : 2,919 = 1,080.56 : x
  2. Step 2: Convert to fraction form
    1,945.64/2,919 = 1,080.56/x
  3. Step 3: Cross multiply
    1,945.64x = 2,919 × 1,080.56
  4. Step 4: Simplify right side
    1,945.64x = 3,154,154.64
  5. Step 5: Solve for x
    x = 3,154,154.64/1,945.64
  6. Step 6: Final answer
    x = 1,621.14

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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.