Home / 8,317.42-12,478.47-3,637.84

Finding the Fourth Proportional to 8,317.42, 12,478.47 and 3,637.84

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Solution

The fourth proportional to 8,317.42, 12,478.47 and 3,637.84 is: 5,457.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,317.42 : 12,478.47 = 3,637.84 : x
  2. Step 2: Convert to fraction form
    8,317.42/12,478.47 = 3,637.84/x
  3. Step 3: Cross multiply
    8,317.42x = 12,478.47 × 3,637.84
  4. Step 4: Simplify right side
    8,317.42x = 45,394,677.30
  5. Step 5: Solve for x
    x = 45,394,677.30/8,317.42
  6. Step 6: Final answer
    x = 5,457.78

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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.