Home / 7,427.76-11,143.80-4,146.72

Finding the Fourth Proportional to 7,427.76, 11,143.80 and 4,146.72

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Solution

The fourth proportional to 7,427.76, 11,143.80 and 4,146.72 is: 6,221.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,427.76 : 11,143.80 = 4,146.72 : x
  2. Step 2: Convert to fraction form
    7,427.76/11,143.80 = 4,146.72/x
  3. Step 3: Cross multiply
    7,427.76x = 11,143.80 × 4,146.72
  4. Step 4: Simplify right side
    7,427.76x = 46,210,218.34
  5. Step 5: Solve for x
    x = 46,210,218.34/7,427.76
  6. Step 6: Final answer
    x = 6,221.29

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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.