Home / 8,491.41-11,718.78-5,134.35

Finding the Fourth Proportional to 8,491.41, 11,718.78 and 5,134.35

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Solution

The fourth proportional to 8,491.41, 11,718.78 and 5,134.35 is: 7,085.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,491.41 : 11,718.78 = 5,134.35 : x
  2. Step 2: Convert to fraction form
    8,491.41/11,718.78 = 5,134.35/x
  3. Step 3: Cross multiply
    8,491.41x = 11,718.78 × 5,134.35
  4. Step 4: Simplify right side
    8,491.41x = 60,168,318.09
  5. Step 5: Solve for x
    x = 60,168,318.09/8,491.41
  6. Step 6: Final answer
    x = 7,085.79

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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.