Home / 1,772.75-2,653.65-1,621.55

Finding the Fourth Proportional to 1,772.75, 2,653.65 and 1,621.55

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Solution

The fourth proportional to 1,772.75, 2,653.65 and 1,621.55 is: 2,427.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,772.75 : 2,653.65 = 1,621.55 : x
  2. Step 2: Convert to fraction form
    1,772.75/2,653.65 = 1,621.55/x
  3. Step 3: Cross multiply
    1,772.75x = 2,653.65 × 1,621.55
  4. Step 4: Simplify right side
    1,772.75x = 4,303,012.89
  5. Step 5: Solve for x
    x = 4,303,012.89/1,772.75
  6. Step 6: Final answer
    x = 2,427.32

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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.