Home / 7,415.78-11,130.62-3,908.39

Finding the Fourth Proportional to 7,415.78, 11,130.62 and 3,908.39

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Solution

The fourth proportional to 7,415.78, 11,130.62 and 3,908.39 is: 5,866.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,415.78 : 11,130.62 = 3,908.39 : x
  2. Step 2: Convert to fraction form
    7,415.78/11,130.62 = 3,908.39/x
  3. Step 3: Cross multiply
    7,415.78x = 11,130.62 × 3,908.39
  4. Step 4: Simplify right side
    7,415.78x = 43,502,728.71
  5. Step 5: Solve for x
    x = 43,502,728.71/7,415.78
  6. Step 6: Final answer
    x = 5,866.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.