Home / 1,765.38-2,643.86-1,398.98

Finding the Fourth Proportional to 1,765.38, 2,643.86 and 1,398.98

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Solution

The fourth proportional to 1,765.38, 2,643.86 and 1,398.98 is: 2,095.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,765.38 : 2,643.86 = 1,398.98 : x
  2. Step 2: Convert to fraction form
    1,765.38/2,643.86 = 1,398.98/x
  3. Step 3: Cross multiply
    1,765.38x = 2,643.86 × 1,398.98
  4. Step 4: Simplify right side
    1,765.38x = 3,698,707.26
  5. Step 5: Solve for x
    x = 3,698,707.26/1,765.38
  6. Step 6: Final answer
    x = 2,095.13

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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.