Home / 3,248.08-4,478.82-2,128.64

Finding the Fourth Proportional to 3,248.08, 4,478.82 and 2,128.64

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Solution

The fourth proportional to 3,248.08, 4,478.82 and 2,128.64 is: 2,935.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,248.08 : 4,478.82 = 2,128.64 : x
  2. Step 2: Convert to fraction form
    3,248.08/4,478.82 = 2,128.64/x
  3. Step 3: Cross multiply
    3,248.08x = 4,478.82 × 2,128.64
  4. Step 4: Simplify right side
    3,248.08x = 9,533,795.40
  5. Step 5: Solve for x
    x = 9,533,795.40/3,248.08
  6. Step 6: Final answer
    x = 2,935.21

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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.