Home / 5,614.60-8,421.90-1,720.20

Finding the Fourth Proportional to 5,614.60, 8,421.90 and 1,720.20

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Solution

The fourth proportional to 5,614.60, 8,421.90 and 1,720.20 is: 2,580.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,614.60 : 8,421.90 = 1,720.20 : x
  2. Step 2: Convert to fraction form
    5,614.60/8,421.90 = 1,720.20/x
  3. Step 3: Cross multiply
    5,614.60x = 8,421.90 × 1,720.20
  4. Step 4: Simplify right side
    5,614.60x = 14,487,352.38
  5. Step 5: Solve for x
    x = 14,487,352.38/5,614.60
  6. Step 6: Final answer
    x = 2,580.30

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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.