Home / 8,420.68-11,619.60-5,062.84

Finding the Fourth Proportional to 8,420.68, 11,619.60 and 5,062.84

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Solution

The fourth proportional to 8,420.68, 11,619.60 and 5,062.84 is: 6,986.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420.68 : 11,619.60 = 5,062.84 : x
  2. Step 2: Convert to fraction form
    8,420.68/11,619.60 = 5,062.84/x
  3. Step 3: Cross multiply
    8,420.68x = 11,619.60 × 5,062.84
  4. Step 4: Simplify right side
    8,420.68x = 58,828,175.66
  5. Step 5: Solve for x
    x = 58,828,175.66/8,420.68
  6. Step 6: Final answer
    x = 6,986.15

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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.