Home / 3,400.61-5,099.54-1,319.45

Finding the Fourth Proportional to 3,400.61, 5,099.54 and 1,319.45

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Solution

The fourth proportional to 3,400.61, 5,099.54 and 1,319.45 is: 1,978.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,400.61 : 5,099.54 = 1,319.45 : x
  2. Step 2: Convert to fraction form
    3,400.61/5,099.54 = 1,319.45/x
  3. Step 3: Cross multiply
    3,400.61x = 5,099.54 × 1,319.45
  4. Step 4: Simplify right side
    3,400.61x = 6,728,555.96
  5. Step 5: Solve for x
    x = 6,728,555.96/3,400.61
  6. Step 6: Final answer
    x = 1,978.63

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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.