Home / 2,126.86-3,187.07-1,430.97

Finding the Fourth Proportional to 2,126.86, 3,187.07 and 1,430.97

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Solution

The fourth proportional to 2,126.86, 3,187.07 and 1,430.97 is: 2,144.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.86 : 3,187.07 = 1,430.97 : x
  2. Step 2: Convert to fraction form
    2,126.86/3,187.07 = 1,430.97/x
  3. Step 3: Cross multiply
    2,126.86x = 3,187.07 × 1,430.97
  4. Step 4: Simplify right side
    2,126.86x = 4,560,599.77
  5. Step 5: Solve for x
    x = 4,560,599.77/2,126.86
  6. Step 6: Final answer
    x = 2,144.29

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1.5x scale

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.