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Finding the Fourth Proportional to 4,140.08, 6,210.12 and 1,218.08

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Solution

The fourth proportional to 4,140.08, 6,210.12 and 1,218.08 is: 1,827.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,140.08 : 6,210.12 = 1,218.08 : x
  2. Step 2: Convert to fraction form
    4,140.08/6,210.12 = 1,218.08/x
  3. Step 3: Cross multiply
    4,140.08x = 6,210.12 × 1,218.08
  4. Step 4: Simplify right side
    4,140.08x = 7,564,422.97
  5. Step 5: Solve for x
    x = 7,564,422.97/4,140.08
  6. Step 6: Final answer
    x = 1,827.12

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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.