Home / 3,160.15-4,740.21-851.65

Finding the Fourth Proportional to 3,160.15, 4,740.21 and 851.65

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Solution

The fourth proportional to 3,160.15, 4,740.21 and 851.65 is: 1,277.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,160.15 : 4,740.21 = 851.65 : x
  2. Step 2: Convert to fraction form
    3,160.15/4,740.21 = 851.65/x
  3. Step 3: Cross multiply
    3,160.15x = 4,740.21 × 851.65
  4. Step 4: Simplify right side
    3,160.15x = 4,036,988.00
  5. Step 5: Solve for x
    x = 4,036,988.00/3,160.15
  6. Step 6: Final answer
    x = 1,277.47

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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.