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Finding the Fourth Proportional to 3,113.48, 4,670.84 and 1,728.80

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Solution

The fourth proportional to 3,113.48, 4,670.84 and 1,728.80 is: 2,593.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,113.48 : 4,670.84 = 1,728.80 : x
  2. Step 2: Convert to fraction form
    3,113.48/4,670.84 = 1,728.80/x
  3. Step 3: Cross multiply
    3,113.48x = 4,670.84 × 1,728.80
  4. Step 4: Simplify right side
    3,113.48x = 8,074,948.19
  5. Step 5: Solve for x
    x = 8,074,948.19/3,113.48
  6. Step 6: Final answer
    x = 2,593.54

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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.