Home / 2,939.49-4,056.62-1,680.75

Finding the Fourth Proportional to 2,939.49, 4,056.62 and 1,680.75

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Solution

The fourth proportional to 2,939.49, 4,056.62 and 1,680.75 is: 2,319.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.49 : 4,056.62 = 1,680.75 : x
  2. Step 2: Convert to fraction form
    2,939.49/4,056.62 = 1,680.75/x
  3. Step 3: Cross multiply
    2,939.49x = 4,056.62 × 1,680.75
  4. Step 4: Simplify right side
    2,939.49x = 6,818,155.66
  5. Step 5: Solve for x
    x = 6,818,155.66/2,939.49
  6. Step 6: Final answer
    x = 2,319.50

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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.