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Finding the Fourth Proportional to 8,465.40, 12,701.70 and 4,080.60

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Solution

The fourth proportional to 8,465.40, 12,701.70 and 4,080.60 is: 6,122.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,465.40 : 12,701.70 = 4,080.60 : x
  2. Step 2: Convert to fraction form
    8,465.40/12,701.70 = 4,080.60/x
  3. Step 3: Cross multiply
    8,465.40x = 12,701.70 × 4,080.60
  4. Step 4: Simplify right side
    8,465.40x = 51,830,557.02
  5. Step 5: Solve for x
    x = 51,830,557.02/8,465.40
  6. Step 6: Final answer
    x = 6,122.64

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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.