Home / 1,802.64-2,488.70-1,431.12

Finding the Fourth Proportional to 1,802.64, 2,488.70 and 1,431.12

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Solution

The fourth proportional to 1,802.64, 2,488.70 and 1,431.12 is: 1,975.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,802.64 : 2,488.70 = 1,431.12 : x
  2. Step 2: Convert to fraction form
    1,802.64/2,488.70 = 1,431.12/x
  3. Step 3: Cross multiply
    1,802.64x = 2,488.70 × 1,431.12
  4. Step 4: Simplify right side
    1,802.64x = 3,561,628.34
  5. Step 5: Solve for x
    x = 3,561,628.34/1,802.64
  6. Step 6: Final answer
    x = 1,975.78

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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.