Home / 3,074.64-4,612.86-1,318.72

Finding the Fourth Proportional to 3,074.64, 4,612.86 and 1,318.72

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Solution

The fourth proportional to 3,074.64, 4,612.86 and 1,318.72 is: 1,978.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,074.64 : 4,612.86 = 1,318.72 : x
  2. Step 2: Convert to fraction form
    3,074.64/4,612.86 = 1,318.72/x
  3. Step 3: Cross multiply
    3,074.64x = 4,612.86 × 1,318.72
  4. Step 4: Simplify right side
    3,074.64x = 6,083,070.74
  5. Step 5: Solve for x
    x = 6,083,070.74/3,074.64
  6. Step 6: Final answer
    x = 1,978.47

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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.