Home / 7,724.88-10,660.35-4,188.10

Finding the Fourth Proportional to 7,724.88, 10,660.35 and 4,188.10

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Solution

The fourth proportional to 7,724.88, 10,660.35 and 4,188.10 is: 5,779.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,724.88 : 10,660.35 = 4,188.10 : x
  2. Step 2: Convert to fraction form
    7,724.88/10,660.35 = 4,188.10/x
  3. Step 3: Cross multiply
    7,724.88x = 10,660.35 × 4,188.10
  4. Step 4: Simplify right side
    7,724.88x = 44,646,638.49
  5. Step 5: Solve for x
    x = 44,646,638.49/7,724.88
  6. Step 6: Final answer
    x = 5,779.59

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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.