Home / 1,638.91-2,458.46-1,065.43

Finding the Fourth Proportional to 1,638.91, 2,458.46 and 1,065.43

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Solution

The fourth proportional to 1,638.91, 2,458.46 and 1,065.43 is: 1,598.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638.91 : 2,458.46 = 1,065.43 : x
  2. Step 2: Convert to fraction form
    1,638.91/2,458.46 = 1,065.43/x
  3. Step 3: Cross multiply
    1,638.91x = 2,458.46 × 1,065.43
  4. Step 4: Simplify right side
    1,638.91x = 2,619,317.04
  5. Step 5: Solve for x
    x = 2,619,317.04/1,638.91
  6. Step 6: Final answer
    x = 1,598.21

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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.