Home / 5,369.11-7,409.79-2,979.30

Finding the Fourth Proportional to 5,369.11, 7,409.79 and 2,979.30

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Solution

The fourth proportional to 5,369.11, 7,409.79 and 2,979.30 is: 4,111.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,369.11 : 7,409.79 = 2,979.30 : x
  2. Step 2: Convert to fraction form
    5,369.11/7,409.79 = 2,979.30/x
  3. Step 3: Cross multiply
    5,369.11x = 7,409.79 × 2,979.30
  4. Step 4: Simplify right side
    5,369.11x = 22,075,987.35
  5. Step 5: Solve for x
    x = 22,075,987.35/5,369.11
  6. Step 6: Final answer
    x = 4,111.67

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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.