Home / 1,772.40-2,659.80-1,154.60

Finding the Fourth Proportional to 1,772.40, 2,659.80 and 1,154.60

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Solution

The fourth proportional to 1,772.40, 2,659.80 and 1,154.60 is: 1,732.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,772.40 : 2,659.80 = 1,154.60 : x
  2. Step 2: Convert to fraction form
    1,772.40/2,659.80 = 1,154.60/x
  3. Step 3: Cross multiply
    1,772.40x = 2,659.80 × 1,154.60
  4. Step 4: Simplify right side
    1,772.40x = 3,071,005.08
  5. Step 5: Solve for x
    x = 3,071,005.08/1,772.40
  6. Step 6: Final answer
    x = 1,732.68

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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.