Home / 7,111.49-9,813.80-3,967.67

Finding the Fourth Proportional to 7,111.49, 9,813.80 and 3,967.67

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Solution

The fourth proportional to 7,111.49, 9,813.80 and 3,967.67 is: 5,475.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111.49 : 9,813.80 = 3,967.67 : x
  2. Step 2: Convert to fraction form
    7,111.49/9,813.80 = 3,967.67/x
  3. Step 3: Cross multiply
    7,111.49x = 9,813.80 × 3,967.67
  4. Step 4: Simplify right side
    7,111.49x = 38,937,850.94
  5. Step 5: Solve for x
    x = 38,937,850.94/7,111.49
  6. Step 6: Final answer
    x = 5,475.35

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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.