Home / 8,728.41-12,045.03-4,749.63

Finding the Fourth Proportional to 8,728.41, 12,045.03 and 4,749.63

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Solution

The fourth proportional to 8,728.41, 12,045.03 and 4,749.63 is: 6,554.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,728.41 : 12,045.03 = 4,749.63 : x
  2. Step 2: Convert to fraction form
    8,728.41/12,045.03 = 4,749.63/x
  3. Step 3: Cross multiply
    8,728.41x = 12,045.03 × 4,749.63
  4. Step 4: Simplify right side
    8,728.41x = 57,209,435.84
  5. Step 5: Solve for x
    x = 57,209,435.84/8,728.41
  6. Step 6: Final answer
    x = 6,554.39

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Half scale
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Double scale
Find fourth proportional to 8,729.41, 12,046.41 and 4,750.63
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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.