Home / 7,768.35-11,639.57-5,455.71

Finding the Fourth Proportional to 7,768.35, 11,639.57 and 5,455.71

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Solution

The fourth proportional to 7,768.35, 11,639.57 and 5,455.71 is: 8,174.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,768.35 : 11,639.57 = 5,455.71 : x
  2. Step 2: Convert to fraction form
    7,768.35/11,639.57 = 5,455.71/x
  3. Step 3: Cross multiply
    7,768.35x = 11,639.57 × 5,455.71
  4. Step 4: Simplify right side
    7,768.35x = 63,502,091.17
  5. Step 5: Solve for x
    x = 63,502,091.17/7,768.35
  6. Step 6: Final answer
    x = 8,174.46

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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.