Home / 2,153.77-3,214.01-1,920.81

Finding the Fourth Proportional to 2,153.77, 3,214.01 and 1,920.81

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Solution

The fourth proportional to 2,153.77, 3,214.01 and 1,920.81 is: 2,866.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,153.77 : 3,214.01 = 1,920.81 : x
  2. Step 2: Convert to fraction form
    2,153.77/3,214.01 = 1,920.81/x
  3. Step 3: Cross multiply
    2,153.77x = 3,214.01 × 1,920.81
  4. Step 4: Simplify right side
    2,153.77x = 6,173,502.55
  5. Step 5: Solve for x
    x = 6,173,502.55/2,153.77
  6. Step 6: Final answer
    x = 2,866.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.