Home / 8,215.23-11,338.19-4,678.77

Finding the Fourth Proportional to 8,215.23, 11,338.19 and 4,678.77

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Solution

The fourth proportional to 8,215.23, 11,338.19 and 4,678.77 is: 6,457.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,215.23 : 11,338.19 = 4,678.77 : x
  2. Step 2: Convert to fraction form
    8,215.23/11,338.19 = 4,678.77/x
  3. Step 3: Cross multiply
    8,215.23x = 11,338.19 × 4,678.77
  4. Step 4: Simplify right side
    8,215.23x = 53,048,783.23
  5. Step 5: Solve for x
    x = 53,048,783.23/8,215.23
  6. Step 6: Final answer
    x = 6,457.37

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Half scale
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Double scale
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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.