Home / 5,459.40-8,190.90-1,762.20

Finding the Fourth Proportional to 5,459.40, 8,190.90 and 1,762.20

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Solution

The fourth proportional to 5,459.40, 8,190.90 and 1,762.20 is: 2,643.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,459.40 : 8,190.90 = 1,762.20 : x
  2. Step 2: Convert to fraction form
    5,459.40/8,190.90 = 1,762.20/x
  3. Step 3: Cross multiply
    5,459.40x = 8,190.90 × 1,762.20
  4. Step 4: Simplify right side
    5,459.40x = 14,434,003.98
  5. Step 5: Solve for x
    x = 14,434,003.98/5,459.40
  6. Step 6: Final answer
    x = 2,643.88

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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.