Home / 8,488.20-12,732.30-2,645.40

Finding the Fourth Proportional to 8,488.20, 12,732.30 and 2,645.40

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Solution

The fourth proportional to 8,488.20, 12,732.30 and 2,645.40 is: 3,968.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,488.20 : 12,732.30 = 2,645.40 : x
  2. Step 2: Convert to fraction form
    8,488.20/12,732.30 = 2,645.40/x
  3. Step 3: Cross multiply
    8,488.20x = 12,732.30 × 2,645.40
  4. Step 4: Simplify right side
    8,488.20x = 33,682,026.42
  5. Step 5: Solve for x
    x = 33,682,026.42/8,488.20
  6. Step 6: Final answer
    x = 3,968.10

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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.