Home / 8,623.40-12,899.10-7,854.44

Finding the Fourth Proportional to 8,623.40, 12,899.10 and 7,854.44

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Solution

The fourth proportional to 8,623.40, 12,899.10 and 7,854.44 is: 11,748.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,623.40 : 12,899.10 = 7,854.44 : x
  2. Step 2: Convert to fraction form
    8,623.40/12,899.10 = 7,854.44/x
  3. Step 3: Cross multiply
    8,623.40x = 12,899.10 × 7,854.44
  4. Step 4: Simplify right side
    8,623.40x = 101,315,207.00
  5. Step 5: Solve for x
    x = 101,315,207.00/8,623.40
  6. Step 6: Final answer
    x = 11,748.87

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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.