Home / 3,126.44-4,314.32-1,782.05

Finding the Fourth Proportional to 3,126.44, 4,314.32 and 1,782.05

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Solution

The fourth proportional to 3,126.44, 4,314.32 and 1,782.05 is: 2,459.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.44 : 4,314.32 = 1,782.05 : x
  2. Step 2: Convert to fraction form
    3,126.44/4,314.32 = 1,782.05/x
  3. Step 3: Cross multiply
    3,126.44x = 4,314.32 × 1,782.05
  4. Step 4: Simplify right side
    3,126.44x = 7,688,316.84
  5. Step 5: Solve for x
    x = 7,688,316.84/3,126.44
  6. Step 6: Final answer
    x = 2,459.13

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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.