Home / 1,890.24-2,819.40-1,627.20

Finding the Fourth Proportional to 1,890.24, 2,819.40 and 1,627.20

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Solution

The fourth proportional to 1,890.24, 2,819.40 and 1,627.20 is: 2,427.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.24 : 2,819.40 = 1,627.20 : x
  2. Step 2: Convert to fraction form
    1,890.24/2,819.40 = 1,627.20/x
  3. Step 3: Cross multiply
    1,890.24x = 2,819.40 × 1,627.20
  4. Step 4: Simplify right side
    1,890.24x = 4,587,727.68
  5. Step 5: Solve for x
    x = 4,587,727.68/1,890.24
  6. Step 6: Final answer
    x = 2,427.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.