Home / 2,475.20-3,415.76-1,356.12

Finding the Fourth Proportional to 2,475.20, 3,415.76 and 1,356.12

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Solution

The fourth proportional to 2,475.20, 3,415.76 and 1,356.12 is: 1,871.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,475.20 : 3,415.76 = 1,356.12 : x
  2. Step 2: Convert to fraction form
    2,475.20/3,415.76 = 1,356.12/x
  3. Step 3: Cross multiply
    2,475.20x = 3,415.76 × 1,356.12
  4. Step 4: Simplify right side
    2,475.20x = 4,632,156.59
  5. Step 5: Solve for x
    x = 4,632,156.59/2,475.20
  6. Step 6: Final answer
    x = 1,871.43

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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.