Home / 7,538.70-11,312.46-3,155.79

Finding the Fourth Proportional to 7,538.70, 11,312.46 and 3,155.79

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Solution

The fourth proportional to 7,538.70, 11,312.46 and 3,155.79 is: 4,735.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,538.70 : 11,312.46 = 3,155.79 : x
  2. Step 2: Convert to fraction form
    7,538.70/11,312.46 = 3,155.79/x
  3. Step 3: Cross multiply
    7,538.70x = 11,312.46 × 3,155.79
  4. Step 4: Simplify right side
    7,538.70x = 35,699,748.14
  5. Step 5: Solve for x
    x = 35,699,748.14/7,538.70
  6. Step 6: Final answer
    x = 4,735.53

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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.