Home / 8,113.59-11,197.08-5,128.34

Finding the Fourth Proportional to 8,113.59, 11,197.08 and 5,128.34

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Solution

The fourth proportional to 8,113.59, 11,197.08 and 5,128.34 is: 7,077.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,113.59 : 11,197.08 = 5,128.34 : x
  2. Step 2: Convert to fraction form
    8,113.59/11,197.08 = 5,128.34/x
  3. Step 3: Cross multiply
    8,113.59x = 11,197.08 × 5,128.34
  4. Step 4: Simplify right side
    8,113.59x = 57,422,377.26
  5. Step 5: Solve for x
    x = 57,422,377.26/8,113.59
  6. Step 6: Final answer
    x = 7,077.31

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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.