Home / 5,421.72-8,124.10-4,192.16

Finding the Fourth Proportional to 5,421.72, 8,124.10 and 4,192.16

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Solution

The fourth proportional to 5,421.72, 8,124.10 and 4,192.16 is: 6,281.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.72 : 8,124.10 = 4,192.16 : x
  2. Step 2: Convert to fraction form
    5,421.72/8,124.10 = 4,192.16/x
  3. Step 3: Cross multiply
    5,421.72x = 8,124.10 × 4,192.16
  4. Step 4: Simplify right side
    5,421.72x = 34,057,527.06
  5. Step 5: Solve for x
    x = 34,057,527.06/5,421.72
  6. Step 6: Final answer
    x = 6,281.68

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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.