Home / 4,387.40-6,573.90-4,128.20

Finding the Fourth Proportional to 4,387.40, 6,573.90 and 4,128.20

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Solution

The fourth proportional to 4,387.40, 6,573.90 and 4,128.20 is: 6,185.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,387.40 : 6,573.90 = 4,128.20 : x
  2. Step 2: Convert to fraction form
    4,387.40/6,573.90 = 4,128.20/x
  3. Step 3: Cross multiply
    4,387.40x = 6,573.90 × 4,128.20
  4. Step 4: Simplify right side
    4,387.40x = 27,138,373.98
  5. Step 5: Solve for x
    x = 27,138,373.98/4,387.40
  6. Step 6: Final answer
    x = 6,185.53

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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.