Home / 3,935.07-5,430.24-2,142.47

Finding the Fourth Proportional to 3,935.07, 5,430.24 and 2,142.47

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Solution

The fourth proportional to 3,935.07, 5,430.24 and 2,142.47 is: 2,956.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,935.07 : 5,430.24 = 2,142.47 : x
  2. Step 2: Convert to fraction form
    3,935.07/5,430.24 = 2,142.47/x
  3. Step 3: Cross multiply
    3,935.07x = 5,430.24 × 2,142.47
  4. Step 4: Simplify right side
    3,935.07x = 11,634,099.14
  5. Step 5: Solve for x
    x = 11,634,099.14/3,935.07
  6. Step 6: Final answer
    x = 2,956.52

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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.