Home / 5,509.85-8,264.77-1,405.85

Finding the Fourth Proportional to 5,509.85, 8,264.77 and 1,405.85

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Solution

The fourth proportional to 5,509.85, 8,264.77 and 1,405.85 is: 2,108.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,509.85 : 8,264.77 = 1,405.85 : x
  2. Step 2: Convert to fraction form
    5,509.85/8,264.77 = 1,405.85/x
  3. Step 3: Cross multiply
    5,509.85x = 8,264.77 × 1,405.85
  4. Step 4: Simplify right side
    5,509.85x = 11,618,978.55
  5. Step 5: Solve for x
    x = 11,618,978.55/5,509.85
  6. Step 6: Final answer
    x = 2,108.77

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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.