Home / 3,970.80-5,954.67-1,889.20

Finding the Fourth Proportional to 3,970.80, 5,954.67 and 1,889.20

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Solution

The fourth proportional to 3,970.80, 5,954.67 and 1,889.20 is: 2,833.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.80 : 5,954.67 = 1,889.20 : x
  2. Step 2: Convert to fraction form
    3,970.80/5,954.67 = 1,889.20/x
  3. Step 3: Cross multiply
    3,970.80x = 5,954.67 × 1,889.20
  4. Step 4: Simplify right side
    3,970.80x = 11,249,562.56
  5. Step 5: Solve for x
    x = 11,249,562.56/3,970.80
  6. Step 6: Final answer
    x = 2,833.07

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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.