Home / 8,427.12-12,638.76-2,271.60

Finding the Fourth Proportional to 8,427.12, 12,638.76 and 2,271.60

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Solution

The fourth proportional to 8,427.12, 12,638.76 and 2,271.60 is: 3,406.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,427.12 : 12,638.76 = 2,271.60 : x
  2. Step 2: Convert to fraction form
    8,427.12/12,638.76 = 2,271.60/x
  3. Step 3: Cross multiply
    8,427.12x = 12,638.76 × 2,271.60
  4. Step 4: Simplify right side
    8,427.12x = 28,710,207.22
  5. Step 5: Solve for x
    x = 28,710,207.22/8,427.12
  6. Step 6: Final answer
    x = 3,406.88

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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.