Home / 3,689.12-5,533.76-1,379.36

Finding the Fourth Proportional to 3,689.12, 5,533.76 and 1,379.36

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Solution

The fourth proportional to 3,689.12, 5,533.76 and 1,379.36 is: 2,069.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,689.12 : 5,533.76 = 1,379.36 : x
  2. Step 2: Convert to fraction form
    3,689.12/5,533.76 = 1,379.36/x
  3. Step 3: Cross multiply
    3,689.12x = 5,533.76 × 1,379.36
  4. Step 4: Simplify right side
    3,689.12x = 7,633,047.19
  5. Step 5: Solve for x
    x = 7,633,047.19/3,689.12
  6. Step 6: Final answer
    x = 2,069.07

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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.