Home / 9,119.80-13,675.70-4,187.80

Finding the Fourth Proportional to 9,119.80, 13,675.70 and 4,187.80

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Solution

The fourth proportional to 9,119.80, 13,675.70 and 4,187.80 is: 6,279.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,119.80 : 13,675.70 = 4,187.80 : x
  2. Step 2: Convert to fraction form
    9,119.80/13,675.70 = 4,187.80/x
  3. Step 3: Cross multiply
    9,119.80x = 13,675.70 × 4,187.80
  4. Step 4: Simplify right side
    9,119.80x = 57,271,096.46
  5. Step 5: Solve for x
    x = 57,271,096.46/9,119.80
  6. Step 6: Final answer
    x = 6,279.86

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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.