Home / 5,409.45-7,465.77-3,172.23

Finding the Fourth Proportional to 5,409.45, 7,465.77 and 3,172.23

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Solution

The fourth proportional to 5,409.45, 7,465.77 and 3,172.23 is: 4,378.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,409.45 : 7,465.77 = 3,172.23 : x
  2. Step 2: Convert to fraction form
    5,409.45/7,465.77 = 3,172.23/x
  3. Step 3: Cross multiply
    5,409.45x = 7,465.77 × 3,172.23
  4. Step 4: Simplify right side
    5,409.45x = 23,683,139.57
  5. Step 5: Solve for x
    x = 23,683,139.57/5,409.45
  6. Step 6: Final answer
    x = 4,378.10

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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.