Home / 1,732.24-2,390.76-986.20

Finding the Fourth Proportional to 1,732.24, 2,390.76 and 986.20

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Solution

The fourth proportional to 1,732.24, 2,390.76 and 986.20 is: 1,361.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,732.24 : 2,390.76 = 986.20 : x
  2. Step 2: Convert to fraction form
    1,732.24/2,390.76 = 986.20/x
  3. Step 3: Cross multiply
    1,732.24x = 2,390.76 × 986.20
  4. Step 4: Simplify right side
    1,732.24x = 2,357,767.51
  5. Step 5: Solve for x
    x = 2,357,767.51/1,732.24
  6. Step 6: Final answer
    x = 1,361.11

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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.