Home / 7,287.34-10,922.48-3,129.60

Finding the Fourth Proportional to 7,287.34, 10,922.48 and 3,129.60

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Solution

The fourth proportional to 7,287.34, 10,922.48 and 3,129.60 is: 4,690.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,287.34 : 10,922.48 = 3,129.60 : x
  2. Step 2: Convert to fraction form
    7,287.34/10,922.48 = 3,129.60/x
  3. Step 3: Cross multiply
    7,287.34x = 10,922.48 × 3,129.60
  4. Step 4: Simplify right side
    7,287.34x = 34,182,993.41
  5. Step 5: Solve for x
    x = 34,182,993.41/7,287.34
  6. Step 6: Final answer
    x = 4,690.74

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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.