Home / 7,760.10-11,639-2,828.58

Finding the Fourth Proportional to 7,760.10, 11,639 and 2,828.58

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Solution

The fourth proportional to 7,760.10, 11,639 and 2,828.58 is: 4,242.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,760.10 : 11,639 = 2,828.58 : x
  2. Step 2: Convert to fraction form
    7,760.10/11,639 = 2,828.58/x
  3. Step 3: Cross multiply
    7,760.10x = 11,639 × 2,828.58
  4. Step 4: Simplify right side
    7,760.10x = 32,921,842.62
  5. Step 5: Solve for x
    x = 32,921,842.62/7,760.10
  6. Step 6: Final answer
    x = 4,242.45

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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.