Home / 3,970.89-5,479.65-2,292.60

Finding the Fourth Proportional to 3,970.89, 5,479.65 and 2,292.60

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Solution

The fourth proportional to 3,970.89, 5,479.65 and 2,292.60 is: 3,163.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.89 : 5,479.65 = 2,292.60 : x
  2. Step 2: Convert to fraction form
    3,970.89/5,479.65 = 2,292.60/x
  3. Step 3: Cross multiply
    3,970.89x = 5,479.65 × 2,292.60
  4. Step 4: Simplify right side
    3,970.89x = 12,562,645.59
  5. Step 5: Solve for x
    x = 12,562,645.59/3,970.89
  6. Step 6: Final answer
    x = 3,163.69

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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.