Home / 1,603.32-2,405.49-986.18

Finding the Fourth Proportional to 1,603.32, 2,405.49 and 986.18

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Solution

The fourth proportional to 1,603.32, 2,405.49 and 986.18 is: 1,479.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,603.32 : 2,405.49 = 986.18 : x
  2. Step 2: Convert to fraction form
    1,603.32/2,405.49 = 986.18/x
  3. Step 3: Cross multiply
    1,603.32x = 2,405.49 × 986.18
  4. Step 4: Simplify right side
    1,603.32x = 2,372,246.13
  5. Step 5: Solve for x
    x = 2,372,246.13/1,603.32
  6. Step 6: Final answer
    x = 1,479.58

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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.