Home / 8,457.80-12,686.40-2,217.77

Finding the Fourth Proportional to 8,457.80, 12,686.40 and 2,217.77

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Solution

The fourth proportional to 8,457.80, 12,686.40 and 2,217.77 is: 3,326.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,457.80 : 12,686.40 = 2,217.77 : x
  2. Step 2: Convert to fraction form
    8,457.80/12,686.40 = 2,217.77/x
  3. Step 3: Cross multiply
    8,457.80x = 12,686.40 × 2,217.77
  4. Step 4: Simplify right side
    8,457.80x = 28,135,453.90
  5. Step 5: Solve for x
    x = 28,135,453.90/8,457.80
  6. Step 6: Final answer
    x = 3,326.57

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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.