Home / 8,678.05-11,975.69-4,699.16

Finding the Fourth Proportional to 8,678.05, 11,975.69 and 4,699.16

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Solution

The fourth proportional to 8,678.05, 11,975.69 and 4,699.16 is: 6,484.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,678.05 : 11,975.69 = 4,699.16 : x
  2. Step 2: Convert to fraction form
    8,678.05/11,975.69 = 4,699.16/x
  3. Step 3: Cross multiply
    8,678.05x = 11,975.69 × 4,699.16
  4. Step 4: Simplify right side
    8,678.05x = 56,275,600.05
  5. Step 5: Solve for x
    x = 56,275,600.05/8,678.05
  6. Step 6: Final answer
    x = 6,484.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.