Home / 6,481-8,945.40-3,688.12

Finding the Fourth Proportional to 6,481, 8,945.40 and 3,688.12

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Solution

The fourth proportional to 6,481, 8,945.40 and 3,688.12 is: 5,090.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,481 : 8,945.40 = 3,688.12 : x
  2. Step 2: Convert to fraction form
    6,481/8,945.40 = 3,688.12/x
  3. Step 3: Cross multiply
    6,481x = 8,945.40 × 3,688.12
  4. Step 4: Simplify right side
    6,481x = 32,991,708.65
  5. Step 5: Solve for x
    x = 32,991,708.65/6,481
  6. Step 6: Final answer
    x = 5,090.53

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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.