Home / 8,619.13-11,890.74-5,261.47

Finding the Fourth Proportional to 8,619.13, 11,890.74 and 5,261.47

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Solution

The fourth proportional to 8,619.13, 11,890.74 and 5,261.47 is: 7,258.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.13 : 11,890.74 = 5,261.47 : x
  2. Step 2: Convert to fraction form
    8,619.13/11,890.74 = 5,261.47/x
  3. Step 3: Cross multiply
    8,619.13x = 11,890.74 × 5,261.47
  4. Step 4: Simplify right side
    8,619.13x = 62,562,771.79
  5. Step 5: Solve for x
    x = 62,562,771.79/8,619.13
  6. Step 6: Final answer
    x = 7,258.59

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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.