Home / 1,869.36-2,579.28-1,620.30

Finding the Fourth Proportional to 1,869.36, 2,579.28 and 1,620.30

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Solution

The fourth proportional to 1,869.36, 2,579.28 and 1,620.30 is: 2,235.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869.36 : 2,579.28 = 1,620.30 : x
  2. Step 2: Convert to fraction form
    1,869.36/2,579.28 = 1,620.30/x
  3. Step 3: Cross multiply
    1,869.36x = 2,579.28 × 1,620.30
  4. Step 4: Simplify right side
    1,869.36x = 4,179,207.38
  5. Step 5: Solve for x
    x = 4,179,207.38/1,869.36
  6. Step 6: Final answer
    x = 2,235.64

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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.