Home / 1,405.32-1,937.36-1,169.60

Finding the Fourth Proportional to 1,405.32, 1,937.36 and 1,169.60

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Solution

The fourth proportional to 1,405.32, 1,937.36 and 1,169.60 is: 1,612.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405.32 : 1,937.36 = 1,169.60 : x
  2. Step 2: Convert to fraction form
    1,405.32/1,937.36 = 1,169.60/x
  3. Step 3: Cross multiply
    1,405.32x = 1,937.36 × 1,169.60
  4. Step 4: Simplify right side
    1,405.32x = 2,265,936.26
  5. Step 5: Solve for x
    x = 2,265,936.26/1,405.32
  6. Step 6: Final answer
    x = 1,612.40

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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.