Home / 2,071.86-3,107.79-1,420.62

Finding the Fourth Proportional to 2,071.86, 3,107.79 and 1,420.62

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Solution

The fourth proportional to 2,071.86, 3,107.79 and 1,420.62 is: 2,130.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,071.86 : 3,107.79 = 1,420.62 : x
  2. Step 2: Convert to fraction form
    2,071.86/3,107.79 = 1,420.62/x
  3. Step 3: Cross multiply
    2,071.86x = 3,107.79 × 1,420.62
  4. Step 4: Simplify right side
    2,071.86x = 4,414,988.63
  5. Step 5: Solve for x
    x = 4,414,988.63/2,071.86
  6. Step 6: Final answer
    x = 2,130.93

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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.