Home / 7,238.16-9,990.21-4,406.45

Finding the Fourth Proportional to 7,238.16, 9,990.21 and 4,406.45

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Solution

The fourth proportional to 7,238.16, 9,990.21 and 4,406.45 is: 6,081.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,238.16 : 9,990.21 = 4,406.45 : x
  2. Step 2: Convert to fraction form
    7,238.16/9,990.21 = 4,406.45/x
  3. Step 3: Cross multiply
    7,238.16x = 9,990.21 × 4,406.45
  4. Step 4: Simplify right side
    7,238.16x = 44,021,310.90
  5. Step 5: Solve for x
    x = 44,021,310.90/7,238.16
  6. Step 6: Final answer
    x = 6,081.84

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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.