Home / 2,133.12-2,942.70-1,248.39

Finding the Fourth Proportional to 2,133.12, 2,942.70 and 1,248.39

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Solution

The fourth proportional to 2,133.12, 2,942.70 and 1,248.39 is: 1,722.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,133.12 : 2,942.70 = 1,248.39 : x
  2. Step 2: Convert to fraction form
    2,133.12/2,942.70 = 1,248.39/x
  3. Step 3: Cross multiply
    2,133.12x = 2,942.70 × 1,248.39
  4. Step 4: Simplify right side
    2,133.12x = 3,673,637.25
  5. Step 5: Solve for x
    x = 3,673,637.25/2,133.12
  6. Step 6: Final answer
    x = 1,722.19

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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.