Home / 7,725.29-10,660.91-4,188.50

Finding the Fourth Proportional to 7,725.29, 10,660.91 and 4,188.50

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Solution

The fourth proportional to 7,725.29, 10,660.91 and 4,188.50 is: 5,780.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,725.29 : 10,660.91 = 4,188.50 : x
  2. Step 2: Convert to fraction form
    7,725.29/10,660.91 = 4,188.50/x
  3. Step 3: Cross multiply
    7,725.29x = 10,660.91 × 4,188.50
  4. Step 4: Simplify right side
    7,725.29x = 44,653,187.27
  5. Step 5: Solve for x
    x = 44,653,187.27/7,725.29
  6. Step 6: Final answer
    x = 5,780.13

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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.