Home / 8,427.86-11,640.75-5,784.02

Finding the Fourth Proportional to 8,427.86, 11,640.75 and 5,784.02

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Solution

The fourth proportional to 8,427.86, 11,640.75 and 5,784.02 is: 7,989.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,427.86 : 11,640.75 = 5,784.02 : x
  2. Step 2: Convert to fraction form
    8,427.86/11,640.75 = 5,784.02/x
  3. Step 3: Cross multiply
    8,427.86x = 11,640.75 × 5,784.02
  4. Step 4: Simplify right side
    8,427.86x = 67,330,330.82
  5. Step 5: Solve for x
    x = 67,330,330.82/8,427.86
  6. Step 6: Final answer
    x = 7,989.02

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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.