Home / 2,121.74-3,181.93-1,470.50

Finding the Fourth Proportional to 2,121.74, 3,181.93 and 1,470.50

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Solution

The fourth proportional to 2,121.74, 3,181.93 and 1,470.50 is: 2,205.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.74 : 3,181.93 = 1,470.50 : x
  2. Step 2: Convert to fraction form
    2,121.74/3,181.93 = 1,470.50/x
  3. Step 3: Cross multiply
    2,121.74x = 3,181.93 × 1,470.50
  4. Step 4: Simplify right side
    2,121.74x = 4,679,028.07
  5. Step 5: Solve for x
    x = 4,679,028.07/2,121.74
  6. Step 6: Final answer
    x = 2,205.28

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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.