Home / 4,271.60-6,407.40-1,805.78

Finding the Fourth Proportional to 4,271.60, 6,407.40 and 1,805.78

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Solution

The fourth proportional to 4,271.60, 6,407.40 and 1,805.78 is: 2,708.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,271.60 : 6,407.40 = 1,805.78 : x
  2. Step 2: Convert to fraction form
    4,271.60/6,407.40 = 1,805.78/x
  3. Step 3: Cross multiply
    4,271.60x = 6,407.40 × 1,805.78
  4. Step 4: Simplify right side
    4,271.60x = 11,570,354.77
  5. Step 5: Solve for x
    x = 11,570,354.77/4,271.60
  6. Step 6: Final answer
    x = 2,708.67

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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.