Home / 6,622.60-9,139.25-3,638.71

Finding the Fourth Proportional to 6,622.60, 9,139.25 and 3,638.71

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Solution

The fourth proportional to 6,622.60, 9,139.25 and 3,638.71 is: 5,021.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,622.60 : 9,139.25 = 3,638.71 : x
  2. Step 2: Convert to fraction form
    6,622.60/9,139.25 = 3,638.71/x
  3. Step 3: Cross multiply
    6,622.60x = 9,139.25 × 3,638.71
  4. Step 4: Simplify right side
    6,622.60x = 33,255,080.37
  5. Step 5: Solve for x
    x = 33,255,080.37/6,622.60
  6. Step 6: Final answer
    x = 5,021.45

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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.