Home / 2,125.37-3,188.07-738.72

Finding the Fourth Proportional to 2,125.37, 3,188.07 and 738.72

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Solution

The fourth proportional to 2,125.37, 3,188.07 and 738.72 is: 1,108.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.37 : 3,188.07 = 738.72 : x
  2. Step 2: Convert to fraction form
    2,125.37/3,188.07 = 738.72/x
  3. Step 3: Cross multiply
    2,125.37x = 3,188.07 × 738.72
  4. Step 4: Simplify right side
    2,125.37x = 2,355,071.44
  5. Step 5: Solve for x
    x = 2,355,071.44/2,125.37
  6. Step 6: Final answer
    x = 1,108.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.