Home / 1,237.55-1,707.89-1,040.72

Finding the Fourth Proportional to 1,237.55, 1,707.89 and 1,040.72

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Solution

The fourth proportional to 1,237.55, 1,707.89 and 1,040.72 is: 1,436.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,237.55 : 1,707.89 = 1,040.72 : x
  2. Step 2: Convert to fraction form
    1,237.55/1,707.89 = 1,040.72/x
  3. Step 3: Cross multiply
    1,237.55x = 1,707.89 × 1,040.72
  4. Step 4: Simplify right side
    1,237.55x = 1,777,421.54
  5. Step 5: Solve for x
    x = 1,777,421.54/1,237.55
  6. Step 6: Final answer
    x = 1,436.25

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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.