Home / 1,442.67-1,986.75-1,353.69

Finding the Fourth Proportional to 1,442.67, 1,986.75 and 1,353.69

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Solution

The fourth proportional to 1,442.67, 1,986.75 and 1,353.69 is: 1,864.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442.67 : 1,986.75 = 1,353.69 : x
  2. Step 2: Convert to fraction form
    1,442.67/1,986.75 = 1,353.69/x
  3. Step 3: Cross multiply
    1,442.67x = 1,986.75 × 1,353.69
  4. Step 4: Simplify right side
    1,442.67x = 2,689,443.61
  5. Step 5: Solve for x
    x = 2,689,443.61/1,442.67
  6. Step 6: Final answer
    x = 1,864.21

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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.