Home / 6,624.89-9,139.74-3,972.56

Finding the Fourth Proportional to 6,624.89, 9,139.74 and 3,972.56

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Solution

The fourth proportional to 6,624.89, 9,139.74 and 3,972.56 is: 5,480.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,624.89 : 9,139.74 = 3,972.56 : x
  2. Step 2: Convert to fraction form
    6,624.89/9,139.74 = 3,972.56/x
  3. Step 3: Cross multiply
    6,624.89x = 9,139.74 × 3,972.56
  4. Step 4: Simplify right side
    6,624.89x = 36,308,165.53
  5. Step 5: Solve for x
    x = 36,308,165.53/6,624.89
  6. Step 6: Final answer
    x = 5,480.57

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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.