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Finding the Fourth Proportional to 6,449.51, 9,678.57 and 2,345.51

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Solution

The fourth proportional to 6,449.51, 9,678.57 and 2,345.51 is: 3,519.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,449.51 : 9,678.57 = 2,345.51 : x
  2. Step 2: Convert to fraction form
    6,449.51/9,678.57 = 2,345.51/x
  3. Step 3: Cross multiply
    6,449.51x = 9,678.57 × 2,345.51
  4. Step 4: Simplify right side
    6,449.51x = 22,701,140.19
  5. Step 5: Solve for x
    x = 22,701,140.19/6,449.51
  6. Step 6: Final answer
    x = 3,519.83

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1.5x scale

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.