Home / 7,421.28-11,122.08-3,036.36

Finding the Fourth Proportional to 7,421.28, 11,122.08 and 3,036.36

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Solution

The fourth proportional to 7,421.28, 11,122.08 and 3,036.36 is: 4,550.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.28 : 11,122.08 = 3,036.36 : x
  2. Step 2: Convert to fraction form
    7,421.28/11,122.08 = 3,036.36/x
  3. Step 3: Cross multiply
    7,421.28x = 11,122.08 × 3,036.36
  4. Step 4: Simplify right side
    7,421.28x = 33,770,638.83
  5. Step 5: Solve for x
    x = 33,770,638.83/7,421.28
  6. Step 6: Final answer
    x = 4,550.51

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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.