Home / 1,207.10-1,810.58-385.97

Finding the Fourth Proportional to 1,207.10, 1,810.58 and 385.97

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Solution

The fourth proportional to 1,207.10, 1,810.58 and 385.97 is: 578.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207.10 : 1,810.58 = 385.97 : x
  2. Step 2: Convert to fraction form
    1,207.10/1,810.58 = 385.97/x
  3. Step 3: Cross multiply
    1,207.10x = 1,810.58 × 385.97
  4. Step 4: Simplify right side
    1,207.10x = 698,818.58
  5. Step 5: Solve for x
    x = 698,818.58/1,207.10
  6. Step 6: Final answer
    x = 578.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.