Home / 1,680.60-2,322.08-1,621.44

Finding the Fourth Proportional to 1,680.60, 2,322.08 and 1,621.44

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Solution

The fourth proportional to 1,680.60, 2,322.08 and 1,621.44 is: 2,240.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.60 : 2,322.08 = 1,621.44 : x
  2. Step 2: Convert to fraction form
    1,680.60/2,322.08 = 1,621.44/x
  3. Step 3: Cross multiply
    1,680.60x = 2,322.08 × 1,621.44
  4. Step 4: Simplify right side
    1,680.60x = 3,765,113.40
  5. Step 5: Solve for x
    x = 3,765,113.40/1,680.60
  6. Step 6: Final answer
    x = 2,240.34

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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.