Home / 3,151.80-4,728.42-1,764.45

Finding the Fourth Proportional to 3,151.80, 4,728.42 and 1,764.45

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Solution

The fourth proportional to 3,151.80, 4,728.42 and 1,764.45 is: 2,647.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.80 : 4,728.42 = 1,764.45 : x
  2. Step 2: Convert to fraction form
    3,151.80/4,728.42 = 1,764.45/x
  3. Step 3: Cross multiply
    3,151.80x = 4,728.42 × 1,764.45
  4. Step 4: Simplify right side
    3,151.80x = 8,343,060.67
  5. Step 5: Solve for x
    x = 8,343,060.67/3,151.80
  6. Step 6: Final answer
    x = 2,647.08

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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.