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Finding the Fourth Proportional to 8,386.01, 12,579.12 and 2,146.07

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Solution

The fourth proportional to 8,386.01, 12,579.12 and 2,146.07 is: 3,219.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,386.01 : 12,579.12 = 2,146.07 : x
  2. Step 2: Convert to fraction form
    8,386.01/12,579.12 = 2,146.07/x
  3. Step 3: Cross multiply
    8,386.01x = 12,579.12 × 2,146.07
  4. Step 4: Simplify right side
    8,386.01x = 26,995,609.16
  5. Step 5: Solve for x
    x = 26,995,609.16/8,386.01
  6. Step 6: Final answer
    x = 3,219.13

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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.