Home / 9,400.10-12,971.34-5,421.50

Finding the Fourth Proportional to 9,400.10, 12,971.34 and 5,421.50

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Solution

The fourth proportional to 9,400.10, 12,971.34 and 5,421.50 is: 7,481.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,400.10 : 12,971.34 = 5,421.50 : x
  2. Step 2: Convert to fraction form
    9,400.10/12,971.34 = 5,421.50/x
  3. Step 3: Cross multiply
    9,400.10x = 12,971.34 × 5,421.50
  4. Step 4: Simplify right side
    9,400.10x = 70,324,119.81
  5. Step 5: Solve for x
    x = 70,324,119.81/9,400.10
  6. Step 6: Final answer
    x = 7,481.21

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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.