Home / 2,119.77-2,923.65-1,621.17

Finding the Fourth Proportional to 2,119.77, 2,923.65 and 1,621.17

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Solution

The fourth proportional to 2,119.77, 2,923.65 and 1,621.17 is: 2,235.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.77 : 2,923.65 = 1,621.17 : x
  2. Step 2: Convert to fraction form
    2,119.77/2,923.65 = 1,621.17/x
  3. Step 3: Cross multiply
    2,119.77x = 2,923.65 × 1,621.17
  4. Step 4: Simplify right side
    2,119.77x = 4,739,733.67
  5. Step 5: Solve for x
    x = 4,739,733.67/2,119.77
  6. Step 6: Final answer
    x = 2,235.97

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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.