Home / 5,319.70-7,979.57-1,856.95

Finding the Fourth Proportional to 5,319.70, 7,979.57 and 1,856.95

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Solution

The fourth proportional to 5,319.70, 7,979.57 and 1,856.95 is: 2,785.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,319.70 : 7,979.57 = 1,856.95 : x
  2. Step 2: Convert to fraction form
    5,319.70/7,979.57 = 1,856.95/x
  3. Step 3: Cross multiply
    5,319.70x = 7,979.57 × 1,856.95
  4. Step 4: Simplify right side
    5,319.70x = 14,817,662.51
  5. Step 5: Solve for x
    x = 14,817,662.51/5,319.70
  6. Step 6: Final answer
    x = 2,785.43

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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.