Home / 7,344.69-10,135.78-3,987.51

Finding the Fourth Proportional to 7,344.69, 10,135.78 and 3,987.51

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Solution

The fourth proportional to 7,344.69, 10,135.78 and 3,987.51 is: 5,502.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,344.69 : 10,135.78 = 3,987.51 : x
  2. Step 2: Convert to fraction form
    7,344.69/10,135.78 = 3,987.51/x
  3. Step 3: Cross multiply
    7,344.69x = 10,135.78 × 3,987.51
  4. Step 4: Simplify right side
    7,344.69x = 40,416,514.14
  5. Step 5: Solve for x
    x = 40,416,514.14/7,344.69
  6. Step 6: Final answer
    x = 5,502.82

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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.