Home / 1,127.44-1,555.90-630.06

Finding the Fourth Proportional to 1,127.44, 1,555.90 and 630.06

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Solution

The fourth proportional to 1,127.44, 1,555.90 and 630.06 is: 869.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.44 : 1,555.90 = 630.06 : x
  2. Step 2: Convert to fraction form
    1,127.44/1,555.90 = 630.06/x
  3. Step 3: Cross multiply
    1,127.44x = 1,555.90 × 630.06
  4. Step 4: Simplify right side
    1,127.44x = 980,310.35
  5. Step 5: Solve for x
    x = 980,310.35/1,127.44
  6. Step 6: Final answer
    x = 869.50

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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.