Home / 5,409.31-7,464.95-3,172.80

Finding the Fourth Proportional to 5,409.31, 7,464.95 and 3,172.80

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Solution

The fourth proportional to 5,409.31, 7,464.95 and 3,172.80 is: 4,378.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,409.31 : 7,464.95 = 3,172.80 : x
  2. Step 2: Convert to fraction form
    5,409.31/7,464.95 = 3,172.80/x
  3. Step 3: Cross multiply
    5,409.31x = 7,464.95 × 3,172.80
  4. Step 4: Simplify right side
    5,409.31x = 23,684,793.36
  5. Step 5: Solve for x
    x = 23,684,793.36/5,409.31
  6. Step 6: Final answer
    x = 4,378.52

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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.