Home / 5,421.39-7,482.34-3,936.05

Finding the Fourth Proportional to 5,421.39, 7,482.34 and 3,936.05

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Solution

The fourth proportional to 5,421.39, 7,482.34 and 3,936.05 is: 5,432.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.39 : 7,482.34 = 3,936.05 : x
  2. Step 2: Convert to fraction form
    5,421.39/7,482.34 = 3,936.05/x
  3. Step 3: Cross multiply
    5,421.39x = 7,482.34 × 3,936.05
  4. Step 4: Simplify right side
    5,421.39x = 29,450,864.36
  5. Step 5: Solve for x
    x = 29,450,864.36/5,421.39
  6. Step 6: Final answer
    x = 5,432.35

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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.