Home / 9,402.40-12,975.24-5,627.20

Finding the Fourth Proportional to 9,402.40, 12,975.24 and 5,627.20

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Solution

The fourth proportional to 9,402.40, 12,975.24 and 5,627.20 is: 7,765.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,402.40 : 12,975.24 = 5,627.20 : x
  2. Step 2: Convert to fraction form
    9,402.40/12,975.24 = 5,627.20/x
  3. Step 3: Cross multiply
    9,402.40x = 12,975.24 × 5,627.20
  4. Step 4: Simplify right side
    9,402.40x = 73,014,270.53
  5. Step 5: Solve for x
    x = 73,014,270.53/9,402.40
  6. Step 6: Final answer
    x = 7,765.49

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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.