Home / 8,181.28-11,289.02-4,643.81

Finding the Fourth Proportional to 8,181.28, 11,289.02 and 4,643.81

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Solution

The fourth proportional to 8,181.28, 11,289.02 and 4,643.81 is: 6,407.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,181.28 : 11,289.02 = 4,643.81 : x
  2. Step 2: Convert to fraction form
    8,181.28/11,289.02 = 4,643.81/x
  3. Step 3: Cross multiply
    8,181.28x = 11,289.02 × 4,643.81
  4. Step 4: Simplify right side
    8,181.28x = 52,424,007.52
  5. Step 5: Solve for x
    x = 52,424,007.52/8,181.28
  6. Step 6: Final answer
    x = 6,407.80

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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.