Home / 4,140.48-6,210.78-1,218.85

Finding the Fourth Proportional to 4,140.48, 6,210.78 and 1,218.85

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Solution

The fourth proportional to 4,140.48, 6,210.78 and 1,218.85 is: 1,828.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,140.48 : 6,210.78 = 1,218.85 : x
  2. Step 2: Convert to fraction form
    4,140.48/6,210.78 = 1,218.85/x
  3. Step 3: Cross multiply
    4,140.48x = 6,210.78 × 1,218.85
  4. Step 4: Simplify right side
    4,140.48x = 7,570,009.20
  5. Step 5: Solve for x
    x = 7,570,009.20/4,140.48
  6. Step 6: Final answer
    x = 1,828.29

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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.