Home / 3,084.39-4,256.52-1,687.14

Finding the Fourth Proportional to 3,084.39, 4,256.52 and 1,687.14

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Solution

The fourth proportional to 3,084.39, 4,256.52 and 1,687.14 is: 2,328.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,084.39 : 4,256.52 = 1,687.14 : x
  2. Step 2: Convert to fraction form
    3,084.39/4,256.52 = 1,687.14/x
  3. Step 3: Cross multiply
    3,084.39x = 4,256.52 × 1,687.14
  4. Step 4: Simplify right side
    3,084.39x = 7,181,345.15
  5. Step 5: Solve for x
    x = 7,181,345.15/3,084.39
  6. Step 6: Final answer
    x = 2,328.29

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Half scale
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Double scale
Find fourth proportional to 3,085.39, 4,257.90 and 1,688.14
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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.