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Finding the Fourth Proportional to 7,443, 10,271.72 and 4,256.60

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Solution

The fourth proportional to 7,443, 10,271.72 and 4,256.60 is: 5,874.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,443 : 10,271.72 = 4,256.60 : x
  2. Step 2: Convert to fraction form
    7,443/10,271.72 = 4,256.60/x
  3. Step 3: Cross multiply
    7,443x = 10,271.72 × 4,256.60
  4. Step 4: Simplify right side
    7,443x = 43,722,603.35
  5. Step 5: Solve for x
    x = 43,722,603.35/7,443
  6. Step 6: Final answer
    x = 5,874.33

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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.