Home / 5,421.30-8,132.61-1,525.71

Finding the Fourth Proportional to 5,421.30, 8,132.61 and 1,525.71

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Solution

The fourth proportional to 5,421.30, 8,132.61 and 1,525.71 is: 2,288.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.30 : 8,132.61 = 1,525.71 : x
  2. Step 2: Convert to fraction form
    5,421.30/8,132.61 = 1,525.71/x
  3. Step 3: Cross multiply
    5,421.30x = 8,132.61 × 1,525.71
  4. Step 4: Simplify right side
    5,421.30x = 12,408,004.40
  5. Step 5: Solve for x
    x = 12,408,004.40/5,421.30
  6. Step 6: Final answer
    x = 2,288.75

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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.