Home / 1,110.51-1,666.31-740.56

Finding the Fourth Proportional to 1,110.51, 1,666.31 and 740.56

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Solution

The fourth proportional to 1,110.51, 1,666.31 and 740.56 is: 1,111.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,110.51 : 1,666.31 = 740.56 : x
  2. Step 2: Convert to fraction form
    1,110.51/1,666.31 = 740.56/x
  3. Step 3: Cross multiply
    1,110.51x = 1,666.31 × 740.56
  4. Step 4: Simplify right side
    1,110.51x = 1,234,002.53
  5. Step 5: Solve for x
    x = 1,234,002.53/1,110.51
  6. Step 6: Final answer
    x = 1,111.20

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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.