Home / 1,319.41-1,979.24-345.52

Finding the Fourth Proportional to 1,319.41, 1,979.24 and 345.52

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Solution

The fourth proportional to 1,319.41, 1,979.24 and 345.52 is: 518.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319.41 : 1,979.24 = 345.52 : x
  2. Step 2: Convert to fraction form
    1,319.41/1,979.24 = 345.52/x
  3. Step 3: Cross multiply
    1,319.41x = 1,979.24 × 345.52
  4. Step 4: Simplify right side
    1,319.41x = 683,856.62
  5. Step 5: Solve for x
    x = 683,856.62/1,319.41
  6. Step 6: Final answer
    x = 518.30

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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.