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Finding the Fourth Proportional to 9,990.99, 14,986.48 and 2,970.98

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Solution

The fourth proportional to 9,990.99, 14,986.48 and 2,970.98 is: 4,456.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,990.99 : 14,986.48 = 2,970.98 : x
  2. Step 2: Convert to fraction form
    9,990.99/14,986.48 = 2,970.98/x
  3. Step 3: Cross multiply
    9,990.99x = 14,986.48 × 2,970.98
  4. Step 4: Simplify right side
    9,990.99x = 44,524,442.56
  5. Step 5: Solve for x
    x = 44,524,442.56/9,990.99
  6. Step 6: Final answer
    x = 4,456.46

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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.