Home / 5,380.29-8,070.63-1,485

Finding the Fourth Proportional to 5,380.29, 8,070.63 and 1,485

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Solution

The fourth proportional to 5,380.29, 8,070.63 and 1,485 is: 2,227.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,380.29 : 8,070.63 = 1,485 : x
  2. Step 2: Convert to fraction form
    5,380.29/8,070.63 = 1,485/x
  3. Step 3: Cross multiply
    5,380.29x = 8,070.63 × 1,485
  4. Step 4: Simplify right side
    5,380.29x = 11,984,885.55
  5. Step 5: Solve for x
    x = 11,984,885.55/5,380.29
  6. Step 6: Final answer
    x = 2,227.55

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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.