Home / 1,680.45-2,507.96-1,636.71

Finding the Fourth Proportional to 1,680.45, 2,507.96 and 1,636.71

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Solution

The fourth proportional to 1,680.45, 2,507.96 and 1,636.71 is: 2,442.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.45 : 2,507.96 = 1,636.71 : x
  2. Step 2: Convert to fraction form
    1,680.45/2,507.96 = 1,636.71/x
  3. Step 3: Cross multiply
    1,680.45x = 2,507.96 × 1,636.71
  4. Step 4: Simplify right side
    1,680.45x = 4,104,797.90
  5. Step 5: Solve for x
    x = 4,104,797.90/1,680.45
  6. Step 6: Final answer
    x = 2,442.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.