Home / 1,680.67-2,317.44-1,230.49

Finding the Fourth Proportional to 1,680.67, 2,317.44 and 1,230.49

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Solution

The fourth proportional to 1,680.67, 2,317.44 and 1,230.49 is: 1,696.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.67 : 2,317.44 = 1,230.49 : x
  2. Step 2: Convert to fraction form
    1,680.67/2,317.44 = 1,230.49/x
  3. Step 3: Cross multiply
    1,680.67x = 2,317.44 × 1,230.49
  4. Step 4: Simplify right side
    1,680.67x = 2,851,586.75
  5. Step 5: Solve for x
    x = 2,851,586.75/1,680.67
  6. Step 6: Final answer
    x = 1,696.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.