Home / 5,416.55-8,130.90-4,189.40

Finding the Fourth Proportional to 5,416.55, 8,130.90 and 4,189.40

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Solution

The fourth proportional to 5,416.55, 8,130.90 and 4,189.40 is: 6,288.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,416.55 : 8,130.90 = 4,189.40 : x
  2. Step 2: Convert to fraction form
    5,416.55/8,130.90 = 4,189.40/x
  3. Step 3: Cross multiply
    5,416.55x = 8,130.90 × 4,189.40
  4. Step 4: Simplify right side
    5,416.55x = 34,063,592.46
  5. Step 5: Solve for x
    x = 34,063,592.46/5,416.55
  6. Step 6: Final answer
    x = 6,288.80

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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.