Home / 9,402.21-12,974.55-5,423.09

Finding the Fourth Proportional to 9,402.21, 12,974.55 and 5,423.09

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Solution

The fourth proportional to 9,402.21, 12,974.55 and 5,423.09 is: 7,483.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,402.21 : 12,974.55 = 5,423.09 : x
  2. Step 2: Convert to fraction form
    9,402.21/12,974.55 = 5,423.09/x
  3. Step 3: Cross multiply
    9,402.21x = 12,974.55 × 5,423.09
  4. Step 4: Simplify right side
    9,402.21x = 70,362,087.49
  5. Step 5: Solve for x
    x = 70,362,087.49/9,402.21
  6. Step 6: Final answer
    x = 7,483.57

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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.