Home / 2,320.70-3,202.47-1,272.78

Finding the Fourth Proportional to 2,320.70, 3,202.47 and 1,272.78

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Solution

The fourth proportional to 2,320.70, 3,202.47 and 1,272.78 is: 1,756.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,320.70 : 3,202.47 = 1,272.78 : x
  2. Step 2: Convert to fraction form
    2,320.70/3,202.47 = 1,272.78/x
  3. Step 3: Cross multiply
    2,320.70x = 3,202.47 × 1,272.78
  4. Step 4: Simplify right side
    2,320.70x = 4,076,039.77
  5. Step 5: Solve for x
    x = 4,076,039.77/2,320.70
  6. Step 6: Final answer
    x = 1,756.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.