Home / 2,780.37-4,172.25-1,465.07

Finding the Fourth Proportional to 2,780.37, 4,172.25 and 1,465.07

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Solution

The fourth proportional to 2,780.37, 4,172.25 and 1,465.07 is: 2,198.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.37 : 4,172.25 = 1,465.07 : x
  2. Step 2: Convert to fraction form
    2,780.37/4,172.25 = 1,465.07/x
  3. Step 3: Cross multiply
    2,780.37x = 4,172.25 × 1,465.07
  4. Step 4: Simplify right side
    2,780.37x = 6,112,617.45
  5. Step 5: Solve for x
    x = 6,112,617.45/2,780.37
  6. Step 6: Final answer
    x = 2,198.49

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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.