Home / 1,319.83-1,979.78-1,012.24

Finding the Fourth Proportional to 1,319.83, 1,979.78 and 1,012.24

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Solution

The fourth proportional to 1,319.83, 1,979.78 and 1,012.24 is: 1,518.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319.83 : 1,979.78 = 1,012.24 : x
  2. Step 2: Convert to fraction form
    1,319.83/1,979.78 = 1,012.24/x
  3. Step 3: Cross multiply
    1,319.83x = 1,979.78 × 1,012.24
  4. Step 4: Simplify right side
    1,319.83x = 2,004,012.51
  5. Step 5: Solve for x
    x = 2,004,012.51/1,319.83
  6. Step 6: Final answer
    x = 1,518.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.