Home / 5,429.25-8,143.88-1,325.25

Finding the Fourth Proportional to 5,429.25, 8,143.88 and 1,325.25

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Solution

The fourth proportional to 5,429.25, 8,143.88 and 1,325.25 is: 1,987.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,429.25 : 8,143.88 = 1,325.25 : x
  2. Step 2: Convert to fraction form
    5,429.25/8,143.88 = 1,325.25/x
  3. Step 3: Cross multiply
    5,429.25x = 8,143.88 × 1,325.25
  4. Step 4: Simplify right side
    5,429.25x = 10,792,670.34
  5. Step 5: Solve for x
    x = 10,792,670.34/5,429.25
  6. Step 6: Final answer
    x = 1,987.88

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1.5x scale

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.