Home / 1,663.36-2,294.40-1,042.72

Finding the Fourth Proportional to 1,663.36, 2,294.40 and 1,042.72

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Solution

The fourth proportional to 1,663.36, 2,294.40 and 1,042.72 is: 1,438.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,663.36 : 2,294.40 = 1,042.72 : x
  2. Step 2: Convert to fraction form
    1,663.36/2,294.40 = 1,042.72/x
  3. Step 3: Cross multiply
    1,663.36x = 2,294.40 × 1,042.72
  4. Step 4: Simplify right side
    1,663.36x = 2,392,416.77
  5. Step 5: Solve for x
    x = 2,392,416.77/1,663.36
  6. Step 6: Final answer
    x = 1,438.30

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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.