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Finding the Fourth Proportional to 8,891.85, 12,271.61 and 4,913.23

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Solution

The fourth proportional to 8,891.85, 12,271.61 and 4,913.23 is: 6,780.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,891.85 : 12,271.61 = 4,913.23 : x
  2. Step 2: Convert to fraction form
    8,891.85/12,271.61 = 4,913.23/x
  3. Step 3: Cross multiply
    8,891.85x = 12,271.61 × 4,913.23
  4. Step 4: Simplify right side
    8,891.85x = 60,293,242.40
  5. Step 5: Solve for x
    x = 60,293,242.40/8,891.85
  6. Step 6: Final answer
    x = 6,780.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.