Home / 7,182.20-9,912.36-4,038.99

Finding the Fourth Proportional to 7,182.20, 9,912.36 and 4,038.99

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Solution

The fourth proportional to 7,182.20, 9,912.36 and 4,038.99 is: 5,574.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,182.20 : 9,912.36 = 4,038.99 : x
  2. Step 2: Convert to fraction form
    7,182.20/9,912.36 = 4,038.99/x
  3. Step 3: Cross multiply
    7,182.20x = 9,912.36 × 4,038.99
  4. Step 4: Simplify right side
    7,182.20x = 40,035,902.72
  5. Step 5: Solve for x
    x = 40,035,902.72/7,182.20
  6. Step 6: Final answer
    x = 5,574.33

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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.