Home / 7,409.79-10,225.18-4,223.78

Finding the Fourth Proportional to 7,409.79, 10,225.18 and 4,223.78

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Solution

The fourth proportional to 7,409.79, 10,225.18 and 4,223.78 is: 5,828.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,409.79 : 10,225.18 = 4,223.78 : x
  2. Step 2: Convert to fraction form
    7,409.79/10,225.18 = 4,223.78/x
  3. Step 3: Cross multiply
    7,409.79x = 10,225.18 × 4,223.78
  4. Step 4: Simplify right side
    7,409.79x = 43,188,910.78
  5. Step 5: Solve for x
    x = 43,188,910.78/7,409.79
  6. Step 6: Final answer
    x = 5,828.63

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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.