Home / 7,724.86-10,660.32-4,188.08

Finding the Fourth Proportional to 7,724.86, 10,660.32 and 4,188.08

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Solution

The fourth proportional to 7,724.86, 10,660.32 and 4,188.08 is: 5,779.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,724.86 : 10,660.32 = 4,188.08 : x
  2. Step 2: Convert to fraction form
    7,724.86/10,660.32 = 4,188.08/x
  3. Step 3: Cross multiply
    7,724.86x = 10,660.32 × 4,188.08
  4. Step 4: Simplify right side
    7,724.86x = 44,646,272.99
  5. Step 5: Solve for x
    x = 44,646,272.99/7,724.86
  6. Step 6: Final answer
    x = 5,779.56

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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.