Home / 8,421.84-11,621.61-4,644.27

Finding the Fourth Proportional to 8,421.84, 11,621.61 and 4,644.27

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Solution

The fourth proportional to 8,421.84, 11,621.61 and 4,644.27 is: 6,408.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421.84 : 11,621.61 = 4,644.27 : x
  2. Step 2: Convert to fraction form
    8,421.84/11,621.61 = 4,644.27/x
  3. Step 3: Cross multiply
    8,421.84x = 11,621.61 × 4,644.27
  4. Step 4: Simplify right side
    8,421.84x = 53,973,894.67
  5. Step 5: Solve for x
    x = 53,973,894.67/8,421.84
  6. Step 6: Final answer
    x = 6,408.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.