Home / 1,579.01-2,178.57-1,019.80

Finding the Fourth Proportional to 1,579.01, 2,178.57 and 1,019.80

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Solution

The fourth proportional to 1,579.01, 2,178.57 and 1,019.80 is: 1,407.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,579.01 : 2,178.57 = 1,019.80 : x
  2. Step 2: Convert to fraction form
    1,579.01/2,178.57 = 1,019.80/x
  3. Step 3: Cross multiply
    1,579.01x = 2,178.57 × 1,019.80
  4. Step 4: Simplify right side
    1,579.01x = 2,221,705.69
  5. Step 5: Solve for x
    x = 2,221,705.69/1,579.01
  6. Step 6: Final answer
    x = 1,407.02

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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.