Home / 7,290.34-10,930.85-3,489.41

Finding the Fourth Proportional to 7,290.34, 10,930.85 and 3,489.41

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Solution

The fourth proportional to 7,290.34, 10,930.85 and 3,489.41 is: 5,231.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,290.34 : 10,930.85 = 3,489.41 : x
  2. Step 2: Convert to fraction form
    7,290.34/10,930.85 = 3,489.41/x
  3. Step 3: Cross multiply
    7,290.34x = 10,930.85 × 3,489.41
  4. Step 4: Simplify right side
    7,290.34x = 38,142,240.26
  5. Step 5: Solve for x
    x = 38,142,240.26/7,290.34
  6. Step 6: Final answer
    x = 5,231.89

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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.