Home / 5,325.30-7,987.68-1,429.74

Finding the Fourth Proportional to 5,325.30, 7,987.68 and 1,429.74

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Solution

The fourth proportional to 5,325.30, 7,987.68 and 1,429.74 is: 2,144.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,325.30 : 7,987.68 = 1,429.74 : x
  2. Step 2: Convert to fraction form
    5,325.30/7,987.68 = 1,429.74/x
  3. Step 3: Cross multiply
    5,325.30x = 7,987.68 × 1,429.74
  4. Step 4: Simplify right side
    5,325.30x = 11,420,305.60
  5. Step 5: Solve for x
    x = 11,420,305.60/5,325.30
  6. Step 6: Final answer
    x = 2,144.54

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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.