Home / 8,353.12-12,529.77-3,421.48

Finding the Fourth Proportional to 8,353.12, 12,529.77 and 3,421.48

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Solution

The fourth proportional to 8,353.12, 12,529.77 and 3,421.48 is: 5,132.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,353.12 : 12,529.77 = 3,421.48 : x
  2. Step 2: Convert to fraction form
    8,353.12/12,529.77 = 3,421.48/x
  3. Step 3: Cross multiply
    8,353.12x = 12,529.77 × 3,421.48
  4. Step 4: Simplify right side
    8,353.12x = 42,870,357.46
  5. Step 5: Solve for x
    x = 42,870,357.46/8,353.12
  6. Step 6: Final answer
    x = 5,132.26

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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.