Home / 7,724.79-10,660.23-4,188.02

Finding the Fourth Proportional to 7,724.79, 10,660.23 and 4,188.02

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Solution

The fourth proportional to 7,724.79, 10,660.23 and 4,188.02 is: 5,779.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,724.79 : 10,660.23 = 4,188.02 : x
  2. Step 2: Convert to fraction form
    7,724.79/10,660.23 = 4,188.02/x
  3. Step 3: Cross multiply
    7,724.79x = 10,660.23 × 4,188.02
  4. Step 4: Simplify right side
    7,724.79x = 44,645,203.14
  5. Step 5: Solve for x
    x = 44,645,203.14/7,724.79
  6. Step 6: Final answer
    x = 5,779.47

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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.