Home / 6,990.09-9,648.38-4,159.47

Finding the Fourth Proportional to 6,990.09, 9,648.38 and 4,159.47

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Solution

The fourth proportional to 6,990.09, 9,648.38 and 4,159.47 is: 5,741.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,990.09 : 9,648.38 = 4,159.47 : x
  2. Step 2: Convert to fraction form
    6,990.09/9,648.38 = 4,159.47/x
  3. Step 3: Cross multiply
    6,990.09x = 9,648.38 × 4,159.47
  4. Step 4: Simplify right side
    6,990.09x = 40,132,147.16
  5. Step 5: Solve for x
    x = 40,132,147.16/6,990.09
  6. Step 6: Final answer
    x = 5,741.29

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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.