Home / 8,590.21-12,887.30-2,666.79

Finding the Fourth Proportional to 8,590.21, 12,887.30 and 2,666.79

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Solution

The fourth proportional to 8,590.21, 12,887.30 and 2,666.79 is: 4,000.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,590.21 : 12,887.30 = 2,666.79 : x
  2. Step 2: Convert to fraction form
    8,590.21/12,887.30 = 2,666.79/x
  3. Step 3: Cross multiply
    8,590.21x = 12,887.30 × 2,666.79
  4. Step 4: Simplify right side
    8,590.21x = 34,367,729.43
  5. Step 5: Solve for x
    x = 34,367,729.43/8,590.21
  6. Step 6: Final answer
    x = 4,000.80

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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.