Home / 1,680.10-2,520.97-1,125.18

Finding the Fourth Proportional to 1,680.10, 2,520.97 and 1,125.18

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Solution

The fourth proportional to 1,680.10, 2,520.97 and 1,125.18 is: 1,688.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.10 : 2,520.97 = 1,125.18 : x
  2. Step 2: Convert to fraction form
    1,680.10/2,520.97 = 1,125.18/x
  3. Step 3: Cross multiply
    1,680.10x = 2,520.97 × 1,125.18
  4. Step 4: Simplify right side
    1,680.10x = 2,836,542.21
  5. Step 5: Solve for x
    x = 2,836,542.21/1,680.10
  6. Step 6: Final answer
    x = 1,688.32

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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.