Home / 6,989.63-9,645.69-3,845.75

Finding the Fourth Proportional to 6,989.63, 9,645.69 and 3,845.75

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Solution

The fourth proportional to 6,989.63, 9,645.69 and 3,845.75 is: 5,307.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,989.63 : 9,645.69 = 3,845.75 : x
  2. Step 2: Convert to fraction form
    6,989.63/9,645.69 = 3,845.75/x
  3. Step 3: Cross multiply
    6,989.63x = 9,645.69 × 3,845.75
  4. Step 4: Simplify right side
    6,989.63x = 37,094,844.86
  5. Step 5: Solve for x
    x = 37,094,844.86/6,989.63
  6. Step 6: Final answer
    x = 5,307.13

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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.