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Finding the Fourth Proportional to 5,672.90, 8,509.41 and 1,975.20

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Solution

The fourth proportional to 5,672.90, 8,509.41 and 1,975.20 is: 2,962.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,672.90 : 8,509.41 = 1,975.20 : x
  2. Step 2: Convert to fraction form
    5,672.90/8,509.41 = 1,975.20/x
  3. Step 3: Cross multiply
    5,672.90x = 8,509.41 × 1,975.20
  4. Step 4: Simplify right side
    5,672.90x = 16,807,786.63
  5. Step 5: Solve for x
    x = 16,807,786.63/5,672.90
  6. Step 6: Final answer
    x = 2,962.82

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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.