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Finding the Fourth Proportional to 6,339.59, 9,510.51 and 2,178.51

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Solution

The fourth proportional to 6,339.59, 9,510.51 and 2,178.51 is: 3,268.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,339.59 : 9,510.51 = 2,178.51 : x
  2. Step 2: Convert to fraction form
    6,339.59/9,510.51 = 2,178.51/x
  3. Step 3: Cross multiply
    6,339.59x = 9,510.51 × 2,178.51
  4. Step 4: Simplify right side
    6,339.59x = 20,718,741.14
  5. Step 5: Solve for x
    x = 20,718,741.14/6,339.59
  6. Step 6: Final answer
    x = 3,268.15

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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.