Home / 8,427.15-12,630.88-6,340.46

Finding the Fourth Proportional to 8,427.15, 12,630.88 and 6,340.46

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Solution

The fourth proportional to 8,427.15, 12,630.88 and 6,340.46 is: 9,503.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,427.15 : 12,630.88 = 6,340.46 : x
  2. Step 2: Convert to fraction form
    8,427.15/12,630.88 = 6,340.46/x
  3. Step 3: Cross multiply
    8,427.15x = 12,630.88 × 6,340.46
  4. Step 4: Simplify right side
    8,427.15x = 80,085,510.40
  5. Step 5: Solve for x
    x = 80,085,510.40/8,427.15
  6. Step 6: Final answer
    x = 9,503.27

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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.