Home / 3,970.64-5,479.30-2,292.35

Finding the Fourth Proportional to 3,970.64, 5,479.30 and 2,292.35

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Solution

The fourth proportional to 3,970.64, 5,479.30 and 2,292.35 is: 3,163.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.64 : 5,479.30 = 2,292.35 : x
  2. Step 2: Convert to fraction form
    3,970.64/5,479.30 = 2,292.35/x
  3. Step 3: Cross multiply
    3,970.64x = 5,479.30 × 2,292.35
  4. Step 4: Simplify right side
    3,970.64x = 12,560,473.36
  5. Step 5: Solve for x
    x = 12,560,473.36/3,970.64
  6. Step 6: Final answer
    x = 3,163.34

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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.