Home / 4,639.84-6,403.60-2,650.78

Finding the Fourth Proportional to 4,639.84, 6,403.60 and 2,650.78

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Solution

The fourth proportional to 4,639.84, 6,403.60 and 2,650.78 is: 3,658.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,639.84 : 6,403.60 = 2,650.78 : x
  2. Step 2: Convert to fraction form
    4,639.84/6,403.60 = 2,650.78/x
  3. Step 3: Cross multiply
    4,639.84x = 6,403.60 × 2,650.78
  4. Step 4: Simplify right side
    4,639.84x = 16,974,534.81
  5. Step 5: Solve for x
    x = 16,974,534.81/4,639.84
  6. Step 6: Final answer
    x = 3,658.43

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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.