Home / 3,125.37-4,314.38-1,947.21

Finding the Fourth Proportional to 3,125.37, 4,314.38 and 1,947.21

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Solution

The fourth proportional to 3,125.37, 4,314.38 and 1,947.21 is: 2,688.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.37 : 4,314.38 = 1,947.21 : x
  2. Step 2: Convert to fraction form
    3,125.37/4,314.38 = 1,947.21/x
  3. Step 3: Cross multiply
    3,125.37x = 4,314.38 × 1,947.21
  4. Step 4: Simplify right side
    3,125.37x = 8,400,994.14
  5. Step 5: Solve for x
    x = 8,400,994.14/3,125.37
  6. Step 6: Final answer
    x = 2,688.00

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Half scale
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Double scale
Find fourth proportional to 3,126.37, 4,315.76 and 1,948.21
Similar ratio
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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.