Home / 7,245.21-10,867.08-1,980.69

Finding the Fourth Proportional to 7,245.21, 10,867.08 and 1,980.69

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Solution

The fourth proportional to 7,245.21, 10,867.08 and 1,980.69 is: 2,970.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,245.21 : 10,867.08 = 1,980.69 : x
  2. Step 2: Convert to fraction form
    7,245.21/10,867.08 = 1,980.69/x
  3. Step 3: Cross multiply
    7,245.21x = 10,867.08 × 1,980.69
  4. Step 4: Simplify right side
    7,245.21x = 21,524,294.13
  5. Step 5: Solve for x
    x = 21,524,294.13/7,245.21
  6. Step 6: Final answer
    x = 2,970.83

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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.