Home / 5,457.39-8,178.24-3,112.53

Finding the Fourth Proportional to 5,457.39, 8,178.24 and 3,112.53

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Solution

The fourth proportional to 5,457.39, 8,178.24 and 3,112.53 is: 4,664.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,457.39 : 8,178.24 = 3,112.53 : x
  2. Step 2: Convert to fraction form
    5,457.39/8,178.24 = 3,112.53/x
  3. Step 3: Cross multiply
    5,457.39x = 8,178.24 × 3,112.53
  4. Step 4: Simplify right side
    5,457.39x = 25,455,017.35
  5. Step 5: Solve for x
    x = 25,455,017.35/5,457.39
  6. Step 6: Final answer
    x = 4,664.32

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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.