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Finding the Fourth Proportional to 1,671.58, 2,307.90 and 1,042.36

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Solution

The fourth proportional to 1,671.58, 2,307.90 and 1,042.36 is: 1,439.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,671.58 : 2,307.90 = 1,042.36 : x
  2. Step 2: Convert to fraction form
    1,671.58/2,307.90 = 1,042.36/x
  3. Step 3: Cross multiply
    1,671.58x = 2,307.90 × 1,042.36
  4. Step 4: Simplify right side
    1,671.58x = 2,405,668.41
  5. Step 5: Solve for x
    x = 2,405,668.41/1,671.58
  6. Step 6: Final answer
    x = 1,439.16

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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.