Home / 1,905.40-2,630.16-1,207.24

Finding the Fourth Proportional to 1,905.40, 2,630.16 and 1,207.24

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Solution

The fourth proportional to 1,905.40, 2,630.16 and 1,207.24 is: 1,666.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.40 : 2,630.16 = 1,207.24 : x
  2. Step 2: Convert to fraction form
    1,905.40/2,630.16 = 1,207.24/x
  3. Step 3: Cross multiply
    1,905.40x = 2,630.16 × 1,207.24
  4. Step 4: Simplify right side
    1,905.40x = 3,175,234.36
  5. Step 5: Solve for x
    x = 3,175,234.36/1,905.40
  6. Step 6: Final answer
    x = 1,666.44

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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.