Home / 2,152.78-2,970.75-1,268.62

Finding the Fourth Proportional to 2,152.78, 2,970.75 and 1,268.62

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Solution

The fourth proportional to 2,152.78, 2,970.75 and 1,268.62 is: 1,750.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,152.78 : 2,970.75 = 1,268.62 : x
  2. Step 2: Convert to fraction form
    2,152.78/2,970.75 = 1,268.62/x
  3. Step 3: Cross multiply
    2,152.78x = 2,970.75 × 1,268.62
  4. Step 4: Simplify right side
    2,152.78x = 3,768,752.87
  5. Step 5: Solve for x
    x = 3,768,752.87/2,152.78
  6. Step 6: Final answer
    x = 1,750.64

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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.