Home / 9,403.05-12,975.76-5,425.45

Finding the Fourth Proportional to 9,403.05, 12,975.76 and 5,425.45

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Solution

The fourth proportional to 9,403.05, 12,975.76 and 5,425.45 is: 7,486.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,403.05 : 12,975.76 = 5,425.45 : x
  2. Step 2: Convert to fraction form
    9,403.05/12,975.76 = 5,425.45/x
  3. Step 3: Cross multiply
    9,403.05x = 12,975.76 × 5,425.45
  4. Step 4: Simplify right side
    9,403.05x = 70,399,245.09
  5. Step 5: Solve for x
    x = 70,399,245.09/9,403.05
  6. Step 6: Final answer
    x = 7,486.85

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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.