Home / 9,409.40-12,984.81-5,160.54

Finding the Fourth Proportional to 9,409.40, 12,984.81 and 5,160.54

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Solution

The fourth proportional to 9,409.40, 12,984.81 and 5,160.54 is: 7,121.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,409.40 : 12,984.81 = 5,160.54 : x
  2. Step 2: Convert to fraction form
    9,409.40/12,984.81 = 5,160.54/x
  3. Step 3: Cross multiply
    9,409.40x = 12,984.81 × 5,160.54
  4. Step 4: Simplify right side
    9,409.40x = 67,008,660.74
  5. Step 5: Solve for x
    x = 67,008,660.74/9,409.40
  6. Step 6: Final answer
    x = 7,121.46

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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.