Home / 1,112.31-1,666.17-1,051.70

Finding the Fourth Proportional to 1,112.31, 1,666.17 and 1,051.70

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Solution

The fourth proportional to 1,112.31, 1,666.17 and 1,051.70 is: 1,575.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112.31 : 1,666.17 = 1,051.70 : x
  2. Step 2: Convert to fraction form
    1,112.31/1,666.17 = 1,051.70/x
  3. Step 3: Cross multiply
    1,112.31x = 1,666.17 × 1,051.70
  4. Step 4: Simplify right side
    1,112.31x = 1,752,302.66
  5. Step 5: Solve for x
    x = 1,752,302.66/1,112.31
  6. Step 6: Final answer
    x = 1,575.37

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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.