Home / 7,311.80-10,090.29-3,954.61

Finding the Fourth Proportional to 7,311.80, 10,090.29 and 3,954.61

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Solution

The fourth proportional to 7,311.80, 10,090.29 and 3,954.61 is: 5,457.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,311.80 : 10,090.29 = 3,954.61 : x
  2. Step 2: Convert to fraction form
    7,311.80/10,090.29 = 3,954.61/x
  3. Step 3: Cross multiply
    7,311.80x = 10,090.29 × 3,954.61
  4. Step 4: Simplify right side
    7,311.80x = 39,903,161.74
  5. Step 5: Solve for x
    x = 39,903,161.74/7,311.80
  6. Step 6: Final answer
    x = 5,457.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.