Home / 8,724.15-12,036.37-5,742.99

Finding the Fourth Proportional to 8,724.15, 12,036.37 and 5,742.99

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Solution

The fourth proportional to 8,724.15, 12,036.37 and 5,742.99 is: 7,923.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,724.15 : 12,036.37 = 5,742.99 : x
  2. Step 2: Convert to fraction form
    8,724.15/12,036.37 = 5,742.99/x
  3. Step 3: Cross multiply
    8,724.15x = 12,036.37 × 5,742.99
  4. Step 4: Simplify right side
    8,724.15x = 69,124,738.19
  5. Step 5: Solve for x
    x = 69,124,738.19/8,724.15
  6. Step 6: Final answer
    x = 7,923.38

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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.