Home / 5,487.60-8,235.45-3,638.10

Finding the Fourth Proportional to 5,487.60, 8,235.45 and 3,638.10

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Solution

The fourth proportional to 5,487.60, 8,235.45 and 3,638.10 is: 5,459.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,487.60 : 8,235.45 = 3,638.10 : x
  2. Step 2: Convert to fraction form
    5,487.60/8,235.45 = 3,638.10/x
  3. Step 3: Cross multiply
    5,487.60x = 8,235.45 × 3,638.10
  4. Step 4: Simplify right side
    5,487.60x = 29,961,390.65
  5. Step 5: Solve for x
    x = 29,961,390.65/5,487.60
  6. Step 6: Final answer
    x = 5,459.84

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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.