Home / 1,752.80-2,419.36-1,228.96

Finding the Fourth Proportional to 1,752.80, 2,419.36 and 1,228.96

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Solution

The fourth proportional to 1,752.80, 2,419.36 and 1,228.96 is: 1,696.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,752.80 : 2,419.36 = 1,228.96 : x
  2. Step 2: Convert to fraction form
    1,752.80/2,419.36 = 1,228.96/x
  3. Step 3: Cross multiply
    1,752.80x = 2,419.36 × 1,228.96
  4. Step 4: Simplify right side
    1,752.80x = 2,973,296.67
  5. Step 5: Solve for x
    x = 2,973,296.67/1,752.80
  6. Step 6: Final answer
    x = 1,696.31

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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.