Home / 6,989.60-9,645.75-3,845.79

Finding the Fourth Proportional to 6,989.60, 9,645.75 and 3,845.79

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Solution

The fourth proportional to 6,989.60, 9,645.75 and 3,845.79 is: 5,307.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,989.60 : 9,645.75 = 3,845.79 : x
  2. Step 2: Convert to fraction form
    6,989.60/9,645.75 = 3,845.79/x
  3. Step 3: Cross multiply
    6,989.60x = 9,645.75 × 3,845.79
  4. Step 4: Simplify right side
    6,989.60x = 37,095,528.89
  5. Step 5: Solve for x
    x = 37,095,528.89/6,989.60
  6. Step 6: Final answer
    x = 5,307.25

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1.5x scale

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.