Home / 3,170.68-4,750.98-1,320.28

Finding the Fourth Proportional to 3,170.68, 4,750.98 and 1,320.28

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Solution

The fourth proportional to 3,170.68, 4,750.98 and 1,320.28 is: 1,978.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,170.68 : 4,750.98 = 1,320.28 : x
  2. Step 2: Convert to fraction form
    3,170.68/4,750.98 = 1,320.28/x
  3. Step 3: Cross multiply
    3,170.68x = 4,750.98 × 1,320.28
  4. Step 4: Simplify right side
    3,170.68x = 6,272,623.87
  5. Step 5: Solve for x
    x = 6,272,623.87/3,170.68
  6. Step 6: Final answer
    x = 1,978.32

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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.