Home / 1,555.81-2,144.87-1,112.94

Finding the Fourth Proportional to 1,555.81, 2,144.87 and 1,112.94

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Solution

The fourth proportional to 1,555.81, 2,144.87 and 1,112.94 is: 1,534.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.81 : 2,144.87 = 1,112.94 : x
  2. Step 2: Convert to fraction form
    1,555.81/2,144.87 = 1,112.94/x
  3. Step 3: Cross multiply
    1,555.81x = 2,144.87 × 1,112.94
  4. Step 4: Simplify right side
    1,555.81x = 2,387,111.62
  5. Step 5: Solve for x
    x = 2,387,111.62/1,555.81
  6. Step 6: Final answer
    x = 1,534.32

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Half scale
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Double scale
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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.