Home / 5,319.36-7,980.16-1,856.48

Finding the Fourth Proportional to 5,319.36, 7,980.16 and 1,856.48

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Solution

The fourth proportional to 5,319.36, 7,980.16 and 1,856.48 is: 2,785.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,319.36 : 7,980.16 = 1,856.48 : x
  2. Step 2: Convert to fraction form
    5,319.36/7,980.16 = 1,856.48/x
  3. Step 3: Cross multiply
    5,319.36x = 7,980.16 × 1,856.48
  4. Step 4: Simplify right side
    5,319.36x = 14,815,007.44
  5. Step 5: Solve for x
    x = 14,815,007.44/5,319.36
  6. Step 6: Final answer
    x = 2,785.11

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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.