Home / 1,683.78-2,322.03-1,186.84

Finding the Fourth Proportional to 1,683.78, 2,322.03 and 1,186.84

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Solution

The fourth proportional to 1,683.78, 2,322.03 and 1,186.84 is: 1,636.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,683.78 : 2,322.03 = 1,186.84 : x
  2. Step 2: Convert to fraction form
    1,683.78/2,322.03 = 1,186.84/x
  3. Step 3: Cross multiply
    1,683.78x = 2,322.03 × 1,186.84
  4. Step 4: Simplify right side
    1,683.78x = 2,755,878.09
  5. Step 5: Solve for x
    x = 2,755,878.09/1,683.78
  6. Step 6: Final answer
    x = 1,636.72

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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.