Home / 2,475.21-3,415.74-1,356.14

Finding the Fourth Proportional to 2,475.21, 3,415.74 and 1,356.14

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Solution

The fourth proportional to 2,475.21, 3,415.74 and 1,356.14 is: 1,871.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,475.21 : 3,415.74 = 1,356.14 : x
  2. Step 2: Convert to fraction form
    2,475.21/3,415.74 = 1,356.14/x
  3. Step 3: Cross multiply
    2,475.21x = 3,415.74 × 1,356.14
  4. Step 4: Simplify right side
    2,475.21x = 4,632,204.56
  5. Step 5: Solve for x
    x = 4,632,204.56/2,475.21
  6. Step 6: Final answer
    x = 1,871.44

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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.