Home / 4,879.40-7,312.70-1,959.75

Finding the Fourth Proportional to 4,879.40, 7,312.70 and 1,959.75

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Solution

The fourth proportional to 4,879.40, 7,312.70 and 1,959.75 is: 2,937.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,879.40 : 7,312.70 = 1,959.75 : x
  2. Step 2: Convert to fraction form
    4,879.40/7,312.70 = 1,959.75/x
  3. Step 3: Cross multiply
    4,879.40x = 7,312.70 × 1,959.75
  4. Step 4: Simplify right side
    4,879.40x = 14,331,063.83
  5. Step 5: Solve for x
    x = 14,331,063.83/4,879.40
  6. Step 6: Final answer
    x = 2,937.05

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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.