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Finding the Fourth Proportional to 8,449.90, 12,673.70 and 2,210.40

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Solution

The fourth proportional to 8,449.90, 12,673.70 and 2,210.40 is: 3,315.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,449.90 : 12,673.70 = 2,210.40 : x
  2. Step 2: Convert to fraction form
    8,449.90/12,673.70 = 2,210.40/x
  3. Step 3: Cross multiply
    8,449.90x = 12,673.70 × 2,210.40
  4. Step 4: Simplify right side
    8,449.90x = 28,013,946.48
  5. Step 5: Solve for x
    x = 28,013,946.48/8,449.90
  6. Step 6: Final answer
    x = 3,315.30

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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.