Home / 1,579.23-2,178.90-1,019.72

Finding the Fourth Proportional to 1,579.23, 2,178.90 and 1,019.72

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Solution

The fourth proportional to 1,579.23, 2,178.90 and 1,019.72 is: 1,406.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,579.23 : 2,178.90 = 1,019.72 : x
  2. Step 2: Convert to fraction form
    1,579.23/2,178.90 = 1,019.72/x
  3. Step 3: Cross multiply
    1,579.23x = 2,178.90 × 1,019.72
  4. Step 4: Simplify right side
    1,579.23x = 2,221,873.36
  5. Step 5: Solve for x
    x = 2,221,873.36/1,579.23
  6. Step 6: Final answer
    x = 1,406.93

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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.