Home / 5,418.99-8,128.61-1,523.31

Finding the Fourth Proportional to 5,418.99, 8,128.61 and 1,523.31

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Solution

The fourth proportional to 5,418.99, 8,128.61 and 1,523.31 is: 2,285.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.99 : 8,128.61 = 1,523.31 : x
  2. Step 2: Convert to fraction form
    5,418.99/8,128.61 = 1,523.31/x
  3. Step 3: Cross multiply
    5,418.99x = 8,128.61 × 1,523.31
  4. Step 4: Simplify right side
    5,418.99x = 12,382,385.28
  5. Step 5: Solve for x
    x = 12,382,385.28/5,418.99
  6. Step 6: Final answer
    x = 2,285.00

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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.