Home / 3,205.48-4,416.52-2,155.72

Finding the Fourth Proportional to 3,205.48, 4,416.52 and 2,155.72

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Solution

The fourth proportional to 3,205.48, 4,416.52 and 2,155.72 is: 2,970.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,205.48 : 4,416.52 = 2,155.72 : x
  2. Step 2: Convert to fraction form
    3,205.48/4,416.52 = 2,155.72/x
  3. Step 3: Cross multiply
    3,205.48x = 4,416.52 × 2,155.72
  4. Step 4: Simplify right side
    3,205.48x = 9,520,780.49
  5. Step 5: Solve for x
    x = 9,520,780.49/3,205.48
  6. Step 6: Final answer
    x = 2,970.16

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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.