Home / 7,803.74-11,705.34-3,421.24

Finding the Fourth Proportional to 7,803.74, 11,705.34 and 3,421.24

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Solution

The fourth proportional to 7,803.74, 11,705.34 and 3,421.24 is: 5,131.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,803.74 : 11,705.34 = 3,421.24 : x
  2. Step 2: Convert to fraction form
    7,803.74/11,705.34 = 3,421.24/x
  3. Step 3: Cross multiply
    7,803.74x = 11,705.34 × 3,421.24
  4. Step 4: Simplify right side
    7,803.74x = 40,046,760.99
  5. Step 5: Solve for x
    x = 40,046,760.99/7,803.74
  6. Step 6: Final answer
    x = 5,131.74

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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.