Home / 1,386.18-2,077.52-605.98

Finding the Fourth Proportional to 1,386.18, 2,077.52 and 605.98

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Solution

The fourth proportional to 1,386.18, 2,077.52 and 605.98 is: 908.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386.18 : 2,077.52 = 605.98 : x
  2. Step 2: Convert to fraction form
    1,386.18/2,077.52 = 605.98/x
  3. Step 3: Cross multiply
    1,386.18x = 2,077.52 × 605.98
  4. Step 4: Simplify right side
    1,386.18x = 1,258,935.57
  5. Step 5: Solve for x
    x = 1,258,935.57/1,386.18
  6. Step 6: Final answer
    x = 908.20

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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.