Home / 5,425.12-8,136.32-1,529.92

Finding the Fourth Proportional to 5,425.12, 8,136.32 and 1,529.92

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Solution

The fourth proportional to 5,425.12, 8,136.32 and 1,529.92 is: 2,294.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,425.12 : 8,136.32 = 1,529.92 : x
  2. Step 2: Convert to fraction form
    5,425.12/8,136.32 = 1,529.92/x
  3. Step 3: Cross multiply
    5,425.12x = 8,136.32 × 1,529.92
  4. Step 4: Simplify right side
    5,425.12x = 12,447,918.69
  5. Step 5: Solve for x
    x = 12,447,918.69/5,425.12
  6. Step 6: Final answer
    x = 2,294.50

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Half scale
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Double scale
Find fourth proportional to 5,426.12, 8,137.82 and 1,530.92
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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.