Home / 8,380.36-12,570.53-2,140.37

Finding the Fourth Proportional to 8,380.36, 12,570.53 and 2,140.37

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Solution

The fourth proportional to 8,380.36, 12,570.53 and 2,140.37 is: 3,210.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,380.36 : 12,570.53 = 2,140.37 : x
  2. Step 2: Convert to fraction form
    8,380.36/12,570.53 = 2,140.37/x
  3. Step 3: Cross multiply
    8,380.36x = 12,570.53 × 2,140.37
  4. Step 4: Simplify right side
    8,380.36x = 26,905,585.30
  5. Step 5: Solve for x
    x = 26,905,585.30/8,380.36
  6. Step 6: Final answer
    x = 3,210.55

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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.