Home / 5,385.63-8,079.66-1,687.85

Finding the Fourth Proportional to 5,385.63, 8,079.66 and 1,687.85

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Solution

The fourth proportional to 5,385.63, 8,079.66 and 1,687.85 is: 2,532.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,385.63 : 8,079.66 = 1,687.85 : x
  2. Step 2: Convert to fraction form
    5,385.63/8,079.66 = 1,687.85/x
  3. Step 3: Cross multiply
    5,385.63x = 8,079.66 × 1,687.85
  4. Step 4: Simplify right side
    5,385.63x = 13,637,213.73
  5. Step 5: Solve for x
    x = 13,637,213.73/5,385.63
  6. Step 6: Final answer
    x = 2,532.15

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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.