Home / 7,788.36-10,752.38-5,143.47

Finding the Fourth Proportional to 7,788.36, 10,752.38 and 5,143.47

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Solution

The fourth proportional to 7,788.36, 10,752.38 and 5,143.47 is: 7,100.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,788.36 : 10,752.38 = 5,143.47 : x
  2. Step 2: Convert to fraction form
    7,788.36/10,752.38 = 5,143.47/x
  3. Step 3: Cross multiply
    7,788.36x = 10,752.38 × 5,143.47
  4. Step 4: Simplify right side
    7,788.36x = 55,304,497.21
  5. Step 5: Solve for x
    x = 55,304,497.21/7,788.36
  6. Step 6: Final answer
    x = 7,100.91

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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.