Home / 5,422.35-8,140.85-3,478.35

Finding the Fourth Proportional to 5,422.35, 8,140.85 and 3,478.35

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Solution

The fourth proportional to 5,422.35, 8,140.85 and 3,478.35 is: 5,222.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,422.35 : 8,140.85 = 3,478.35 : x
  2. Step 2: Convert to fraction form
    5,422.35/8,140.85 = 3,478.35/x
  3. Step 3: Cross multiply
    5,422.35x = 8,140.85 × 3,478.35
  4. Step 4: Simplify right side
    5,422.35x = 28,316,708.21
  5. Step 5: Solve for x
    x = 28,316,708.21/5,422.35
  6. Step 6: Final answer
    x = 5,222.22

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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.