Home / 5,422.45-8,128.13-3,077.50

Finding the Fourth Proportional to 5,422.45, 8,128.13 and 3,077.50

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Solution

The fourth proportional to 5,422.45, 8,128.13 and 3,077.50 is: 4,613.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,422.45 : 8,128.13 = 3,077.50 : x
  2. Step 2: Convert to fraction form
    5,422.45/8,128.13 = 3,077.50/x
  3. Step 3: Cross multiply
    5,422.45x = 8,128.13 × 3,077.50
  4. Step 4: Simplify right side
    5,422.45x = 25,014,320.08
  5. Step 5: Solve for x
    x = 25,014,320.08/5,422.45
  6. Step 6: Final answer
    x = 4,613.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.