Home / 1,479.12-2,213.21-1,216.68

Finding the Fourth Proportional to 1,479.12, 2,213.21 and 1,216.68

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Solution

The fourth proportional to 1,479.12, 2,213.21 and 1,216.68 is: 1,820.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,479.12 : 2,213.21 = 1,216.68 : x
  2. Step 2: Convert to fraction form
    1,479.12/2,213.21 = 1,216.68/x
  3. Step 3: Cross multiply
    1,479.12x = 2,213.21 × 1,216.68
  4. Step 4: Simplify right side
    1,479.12x = 2,692,762.47
  5. Step 5: Solve for x
    x = 2,692,762.47/1,479.12
  6. Step 6: Final answer
    x = 1,820.52

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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.