Home / 9,398.48-12,969.89-5,149.80

Finding the Fourth Proportional to 9,398.48, 12,969.89 and 5,149.80

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Solution

The fourth proportional to 9,398.48, 12,969.89 and 5,149.80 is: 7,106.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,398.48 : 12,969.89 = 5,149.80 : x
  2. Step 2: Convert to fraction form
    9,398.48/12,969.89 = 5,149.80/x
  3. Step 3: Cross multiply
    9,398.48x = 12,969.89 × 5,149.80
  4. Step 4: Simplify right side
    9,398.48x = 66,792,313.77
  5. Step 5: Solve for x
    x = 66,792,313.77/9,398.48
  6. Step 6: Final answer
    x = 7,106.72

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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.