Home / 2,117.96-2,922.81-1,173.77

Finding the Fourth Proportional to 2,117.96, 2,922.81 and 1,173.77

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Solution

The fourth proportional to 2,117.96, 2,922.81 and 1,173.77 is: 1,619.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.96 : 2,922.81 = 1,173.77 : x
  2. Step 2: Convert to fraction form
    2,117.96/2,922.81 = 1,173.77/x
  3. Step 3: Cross multiply
    2,117.96x = 2,922.81 × 1,173.77
  4. Step 4: Simplify right side
    2,117.96x = 3,430,700.82
  5. Step 5: Solve for x
    x = 3,430,700.82/2,117.96
  6. Step 6: Final answer
    x = 1,619.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.