Home / 5,380.13-7,424.53-2,990.12

Finding the Fourth Proportional to 5,380.13, 7,424.53 and 2,990.12

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Solution

The fourth proportional to 5,380.13, 7,424.53 and 2,990.12 is: 4,126.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,380.13 : 7,424.53 = 2,990.12 : x
  2. Step 2: Convert to fraction form
    5,380.13/7,424.53 = 2,990.12/x
  3. Step 3: Cross multiply
    5,380.13x = 7,424.53 × 2,990.12
  4. Step 4: Simplify right side
    5,380.13x = 22,200,206.81
  5. Step 5: Solve for x
    x = 22,200,206.81/5,380.13
  6. Step 6: Final answer
    x = 4,126.33

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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.