Home / 7,724.60-10,659.91-4,187.80

Finding the Fourth Proportional to 7,724.60, 10,659.91 and 4,187.80

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Solution

The fourth proportional to 7,724.60, 10,659.91 and 4,187.80 is: 5,779.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,724.60 : 10,659.91 = 4,187.80 : x
  2. Step 2: Convert to fraction form
    7,724.60/10,659.91 = 4,187.80/x
  3. Step 3: Cross multiply
    7,724.60x = 10,659.91 × 4,187.80
  4. Step 4: Simplify right side
    7,724.60x = 44,641,571.10
  5. Step 5: Solve for x
    x = 44,641,571.10/7,724.60
  6. Step 6: Final answer
    x = 5,779.14

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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.