Home / 9,400.40-12,972.36-5,208.56

Finding the Fourth Proportional to 9,400.40, 12,972.36 and 5,208.56

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Solution

The fourth proportional to 9,400.40, 12,972.36 and 5,208.56 is: 7,187.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,400.40 : 12,972.36 = 5,208.56 : x
  2. Step 2: Convert to fraction form
    9,400.40/12,972.36 = 5,208.56/x
  3. Step 3: Cross multiply
    9,400.40x = 12,972.36 × 5,208.56
  4. Step 4: Simplify right side
    9,400.40x = 67,567,315.40
  5. Step 5: Solve for x
    x = 67,567,315.40/9,400.40
  6. Step 6: Final answer
    x = 7,187.71

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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.