Home / 5,325.24-7,987.80-1,429.92

Finding the Fourth Proportional to 5,325.24, 7,987.80 and 1,429.92

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Solution

The fourth proportional to 5,325.24, 7,987.80 and 1,429.92 is: 2,144.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,325.24 : 7,987.80 = 1,429.92 : x
  2. Step 2: Convert to fraction form
    5,325.24/7,987.80 = 1,429.92/x
  3. Step 3: Cross multiply
    5,325.24x = 7,987.80 × 1,429.92
  4. Step 4: Simplify right side
    5,325.24x = 11,421,914.98
  5. Step 5: Solve for x
    x = 11,421,914.98/5,325.24
  6. Step 6: Final answer
    x = 2,144.86

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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.