Home / 8,666.10-12,991.35-3,118.14

Finding the Fourth Proportional to 8,666.10, 12,991.35 and 3,118.14

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Solution

The fourth proportional to 8,666.10, 12,991.35 and 3,118.14 is: 4,674.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,666.10 : 12,991.35 = 3,118.14 : x
  2. Step 2: Convert to fraction form
    8,666.10/12,991.35 = 3,118.14/x
  3. Step 3: Cross multiply
    8,666.10x = 12,991.35 × 3,118.14
  4. Step 4: Simplify right side
    8,666.10x = 40,508,859.78
  5. Step 5: Solve for x
    x = 40,508,859.78/8,666.10
  6. Step 6: Final answer
    x = 4,674.40

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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.