Home / 7,924.93-11,888.75-3,978.07

Finding the Fourth Proportional to 7,924.93, 11,888.75 and 3,978.07

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Solution

The fourth proportional to 7,924.93, 11,888.75 and 3,978.07 is: 5,967.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,924.93 : 11,888.75 = 3,978.07 : x
  2. Step 2: Convert to fraction form
    7,924.93/11,888.75 = 3,978.07/x
  3. Step 3: Cross multiply
    7,924.93x = 11,888.75 × 3,978.07
  4. Step 4: Simplify right side
    7,924.93x = 47,294,279.71
  5. Step 5: Solve for x
    x = 47,294,279.71/7,924.93
  6. Step 6: Final answer
    x = 5,967.79

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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.