Home / 1,127.35-1,555.60-629.99

Finding the Fourth Proportional to 1,127.35, 1,555.60 and 629.99

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Solution

The fourth proportional to 1,127.35, 1,555.60 and 629.99 is: 869.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.35 : 1,555.60 = 629.99 : x
  2. Step 2: Convert to fraction form
    1,127.35/1,555.60 = 629.99/x
  3. Step 3: Cross multiply
    1,127.35x = 1,555.60 × 629.99
  4. Step 4: Simplify right side
    1,127.35x = 980,003.09
  5. Step 5: Solve for x
    x = 980,003.09/1,127.35
  6. Step 6: Final answer
    x = 869.30

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1.5x scale

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.