Home / 8,170.72-11,271.36-5,655.20

Finding the Fourth Proportional to 8,170.72, 11,271.36 and 5,655.20

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Solution

The fourth proportional to 8,170.72, 11,271.36 and 5,655.20 is: 7,801.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,170.72 : 11,271.36 = 5,655.20 : x
  2. Step 2: Convert to fraction form
    8,170.72/11,271.36 = 5,655.20/x
  3. Step 3: Cross multiply
    8,170.72x = 11,271.36 × 5,655.20
  4. Step 4: Simplify right side
    8,170.72x = 63,741,795.07
  5. Step 5: Solve for x
    x = 63,741,795.07/8,170.72
  6. Step 6: Final answer
    x = 7,801.25

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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.