Home / 5,412.55-8,124.90-4,185.40

Finding the Fourth Proportional to 5,412.55, 8,124.90 and 4,185.40

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Solution

The fourth proportional to 5,412.55, 8,124.90 and 4,185.40 is: 6,282.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.55 : 8,124.90 = 4,185.40 : x
  2. Step 2: Convert to fraction form
    5,412.55/8,124.90 = 4,185.40/x
  3. Step 3: Cross multiply
    5,412.55x = 8,124.90 × 4,185.40
  4. Step 4: Simplify right side
    5,412.55x = 34,005,956.46
  5. Step 5: Solve for x
    x = 34,005,956.46/5,412.55
  6. Step 6: Final answer
    x = 6,282.80

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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.