Home / 6,615.92-9,130.69-4,228.09

Finding the Fourth Proportional to 6,615.92, 9,130.69 and 4,228.09

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Solution

The fourth proportional to 6,615.92, 9,130.69 and 4,228.09 is: 5,835.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,615.92 : 9,130.69 = 4,228.09 : x
  2. Step 2: Convert to fraction form
    6,615.92/9,130.69 = 4,228.09/x
  3. Step 3: Cross multiply
    6,615.92x = 9,130.69 × 4,228.09
  4. Step 4: Simplify right side
    6,615.92x = 38,605,379.08
  5. Step 5: Solve for x
    x = 38,605,379.08/6,615.92
  6. Step 6: Final answer
    x = 5,835.22

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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.