Home / 2,153.04-2,971.28-1,268.80

Finding the Fourth Proportional to 2,153.04, 2,971.28 and 1,268.80

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Solution

The fourth proportional to 2,153.04, 2,971.28 and 1,268.80 is: 1,750.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,153.04 : 2,971.28 = 1,268.80 : x
  2. Step 2: Convert to fraction form
    2,153.04/2,971.28 = 1,268.80/x
  3. Step 3: Cross multiply
    2,153.04x = 2,971.28 × 1,268.80
  4. Step 4: Simplify right side
    2,153.04x = 3,769,960.06
  5. Step 5: Solve for x
    x = 3,769,960.06/2,153.04
  6. Step 6: Final answer
    x = 1,750.99

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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.