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Finding the Fourth Proportional to 3,025.68, 4,538.31 and 945.50

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Solution

The fourth proportional to 3,025.68, 4,538.31 and 945.50 is: 1,418.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,025.68 : 4,538.31 = 945.50 : x
  2. Step 2: Convert to fraction form
    3,025.68/4,538.31 = 945.50/x
  3. Step 3: Cross multiply
    3,025.68x = 4,538.31 × 945.50
  4. Step 4: Simplify right side
    3,025.68x = 4,290,949.41
  5. Step 5: Solve for x
    x = 4,290,949.41/3,025.68
  6. Step 6: Final answer
    x = 1,418.18

Related Problems

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Half scale
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Double scale
Find fourth proportional to 3,026.68, 4,539.81 and 946.50
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.