Home / 6,623.17-9,139.70-3,639.06

Finding the Fourth Proportional to 6,623.17, 9,139.70 and 3,639.06

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Solution

The fourth proportional to 6,623.17, 9,139.70 and 3,639.06 is: 5,021.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,623.17 : 9,139.70 = 3,639.06 : x
  2. Step 2: Convert to fraction form
    6,623.17/9,139.70 = 3,639.06/x
  3. Step 3: Cross multiply
    6,623.17x = 9,139.70 × 3,639.06
  4. Step 4: Simplify right side
    6,623.17x = 33,259,925.78
  5. Step 5: Solve for x
    x = 33,259,925.78/6,623.17
  6. Step 6: Final answer
    x = 5,021.76

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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.