Home / 5,423.39-7,485.10-3,938.05

Finding the Fourth Proportional to 5,423.39, 7,485.10 and 3,938.05

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Solution

The fourth proportional to 5,423.39, 7,485.10 and 3,938.05 is: 5,435.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,423.39 : 7,485.10 = 3,938.05 : x
  2. Step 2: Convert to fraction form
    5,423.39/7,485.10 = 3,938.05/x
  3. Step 3: Cross multiply
    5,423.39x = 7,485.10 × 3,938.05
  4. Step 4: Simplify right side
    5,423.39x = 29,476,698.06
  5. Step 5: Solve for x
    x = 29,476,698.06/5,423.39
  6. Step 6: Final answer
    x = 5,435.11

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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.