Home / 9,992.35-14,990.55-3,418.80

Finding the Fourth Proportional to 9,992.35, 14,990.55 and 3,418.80

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Solution

The fourth proportional to 9,992.35, 14,990.55 and 3,418.80 is: 5,128.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,992.35 : 14,990.55 = 3,418.80 : x
  2. Step 2: Convert to fraction form
    9,992.35/14,990.55 = 3,418.80/x
  3. Step 3: Cross multiply
    9,992.35x = 14,990.55 × 3,418.80
  4. Step 4: Simplify right side
    9,992.35x = 51,249,692.34
  5. Step 5: Solve for x
    x = 51,249,692.34/9,992.35
  6. Step 6: Final answer
    x = 5,128.89

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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.