Home / 1,945.18-2,683.86-1,188.76

Finding the Fourth Proportional to 1,945.18, 2,683.86 and 1,188.76

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Solution

The fourth proportional to 1,945.18, 2,683.86 and 1,188.76 is: 1,640.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.18 : 2,683.86 = 1,188.76 : x
  2. Step 2: Convert to fraction form
    1,945.18/2,683.86 = 1,188.76/x
  3. Step 3: Cross multiply
    1,945.18x = 2,683.86 × 1,188.76
  4. Step 4: Simplify right side
    1,945.18x = 3,190,465.41
  5. Step 5: Solve for x
    x = 3,190,465.41/1,945.18
  6. Step 6: Final answer
    x = 1,640.19

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Half scale
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Double scale
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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.