Home / 5,381.20-8,066.40-2,461.60

Finding the Fourth Proportional to 5,381.20, 8,066.40 and 2,461.60

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Solution

The fourth proportional to 5,381.20, 8,066.40 and 2,461.60 is: 3,689.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,381.20 : 8,066.40 = 2,461.60 : x
  2. Step 2: Convert to fraction form
    5,381.20/8,066.40 = 2,461.60/x
  3. Step 3: Cross multiply
    5,381.20x = 8,066.40 × 2,461.60
  4. Step 4: Simplify right side
    5,381.20x = 19,856,250.24
  5. Step 5: Solve for x
    x = 19,856,250.24/5,381.20
  6. Step 6: Final answer
    x = 3,689.93

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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.