Home / 8,457.91-12,688.23-2,909.90

Finding the Fourth Proportional to 8,457.91, 12,688.23 and 2,909.90

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Solution

The fourth proportional to 8,457.91, 12,688.23 and 2,909.90 is: 4,365.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,457.91 : 12,688.23 = 2,909.90 : x
  2. Step 2: Convert to fraction form
    8,457.91/12,688.23 = 2,909.90/x
  3. Step 3: Cross multiply
    8,457.91x = 12,688.23 × 2,909.90
  4. Step 4: Simplify right side
    8,457.91x = 36,921,480.48
  5. Step 5: Solve for x
    x = 36,921,480.48/8,457.91
  6. Step 6: Final answer
    x = 4,365.32

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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.