Home / 4,140.72-6,210.86-1,219.05

Finding the Fourth Proportional to 4,140.72, 6,210.86 and 1,219.05

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Solution

The fourth proportional to 4,140.72, 6,210.86 and 1,219.05 is: 1,828.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,140.72 : 6,210.86 = 1,219.05 : x
  2. Step 2: Convert to fraction form
    4,140.72/6,210.86 = 1,219.05/x
  3. Step 3: Cross multiply
    4,140.72x = 6,210.86 × 1,219.05
  4. Step 4: Simplify right side
    4,140.72x = 7,571,342.79
  5. Step 5: Solve for x
    x = 7,571,342.79/4,140.72
  6. Step 6: Final answer
    x = 1,828.51

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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.