Home / 2,997.90-4,496.66-917.72

Finding the Fourth Proportional to 2,997.90, 4,496.66 and 917.72

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Solution

The fourth proportional to 2,997.90, 4,496.66 and 917.72 is: 1,376.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,997.90 : 4,496.66 = 917.72 : x
  2. Step 2: Convert to fraction form
    2,997.90/4,496.66 = 917.72/x
  3. Step 3: Cross multiply
    2,997.90x = 4,496.66 × 917.72
  4. Step 4: Simplify right side
    2,997.90x = 4,126,647.74
  5. Step 5: Solve for x
    x = 4,126,647.74/2,997.90
  6. Step 6: Final answer
    x = 1,376.51

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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.