Home / 2,145.44-3,215.28-846.20

Finding the Fourth Proportional to 2,145.44, 3,215.28 and 846.20

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Solution

The fourth proportional to 2,145.44, 3,215.28 and 846.20 is: 1,268.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.44 : 3,215.28 = 846.20 : x
  2. Step 2: Convert to fraction form
    2,145.44/3,215.28 = 846.20/x
  3. Step 3: Cross multiply
    2,145.44x = 3,215.28 × 846.20
  4. Step 4: Simplify right side
    2,145.44x = 2,720,769.94
  5. Step 5: Solve for x
    x = 2,720,769.94/2,145.44
  6. Step 6: Final answer
    x = 1,268.16

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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.