Home / 2,816.37-3,886.74-1,621.54

Finding the Fourth Proportional to 2,816.37, 3,886.74 and 1,621.54

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Solution

The fourth proportional to 2,816.37, 3,886.74 and 1,621.54 is: 2,237.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.37 : 3,886.74 = 1,621.54 : x
  2. Step 2: Convert to fraction form
    2,816.37/3,886.74 = 1,621.54/x
  3. Step 3: Cross multiply
    2,816.37x = 3,886.74 × 1,621.54
  4. Step 4: Simplify right side
    2,816.37x = 6,302,482.81
  5. Step 5: Solve for x
    x = 6,302,482.81/2,816.37
  6. Step 6: Final answer
    x = 2,237.80

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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.