Home / 2,157.06-3,234.90-1,430.50

Finding the Fourth Proportional to 2,157.06, 3,234.90 and 1,430.50

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Solution

The fourth proportional to 2,157.06, 3,234.90 and 1,430.50 is: 2,145.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157.06 : 3,234.90 = 1,430.50 : x
  2. Step 2: Convert to fraction form
    2,157.06/3,234.90 = 1,430.50/x
  3. Step 3: Cross multiply
    2,157.06x = 3,234.90 × 1,430.50
  4. Step 4: Simplify right side
    2,157.06x = 4,627,524.45
  5. Step 5: Solve for x
    x = 4,627,524.45/2,157.06
  6. Step 6: Final answer
    x = 2,145.29

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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.