Home / 9,990.24-14,980.80-3,745.44

Finding the Fourth Proportional to 9,990.24, 14,980.80 and 3,745.44

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Solution

The fourth proportional to 9,990.24, 14,980.80 and 3,745.44 is: 5,616.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,990.24 : 14,980.80 = 3,745.44 : x
  2. Step 2: Convert to fraction form
    9,990.24/14,980.80 = 3,745.44/x
  3. Step 3: Cross multiply
    9,990.24x = 14,980.80 × 3,745.44
  4. Step 4: Simplify right side
    9,990.24x = 56,109,687.55
  5. Step 5: Solve for x
    x = 56,109,687.55/9,990.24
  6. Step 6: Final answer
    x = 5,616.45

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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.