Home / 5,218.58-7,820.54-2,879.67

Finding the Fourth Proportional to 5,218.58, 7,820.54 and 2,879.67

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Solution

The fourth proportional to 5,218.58, 7,820.54 and 2,879.67 is: 4,315.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.58 : 7,820.54 = 2,879.67 : x
  2. Step 2: Convert to fraction form
    5,218.58/7,820.54 = 2,879.67/x
  3. Step 3: Cross multiply
    5,218.58x = 7,820.54 × 2,879.67
  4. Step 4: Simplify right side
    5,218.58x = 22,520,574.42
  5. Step 5: Solve for x
    x = 22,520,574.42/5,218.58
  6. Step 6: Final answer
    x = 4,315.46

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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.