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Finding the Fourth Proportional to 8,323.40, 12,485.10 and 7,070.60

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Solution

The fourth proportional to 8,323.40, 12,485.10 and 7,070.60 is: 10,605.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,323.40 : 12,485.10 = 7,070.60 : x
  2. Step 2: Convert to fraction form
    8,323.40/12,485.10 = 7,070.60/x
  3. Step 3: Cross multiply
    8,323.40x = 12,485.10 × 7,070.60
  4. Step 4: Simplify right side
    8,323.40x = 88,277,148.06
  5. Step 5: Solve for x
    x = 88,277,148.06/8,323.40
  6. Step 6: Final answer
    x = 10,605.90

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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.