Home / 2,125.90-2,933.01-1,328.68

Finding the Fourth Proportional to 2,125.90, 2,933.01 and 1,328.68

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Solution

The fourth proportional to 2,125.90, 2,933.01 and 1,328.68 is: 1,833.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.90 : 2,933.01 = 1,328.68 : x
  2. Step 2: Convert to fraction form
    2,125.90/2,933.01 = 1,328.68/x
  3. Step 3: Cross multiply
    2,125.90x = 2,933.01 × 1,328.68
  4. Step 4: Simplify right side
    2,125.90x = 3,897,017.06
  5. Step 5: Solve for x
    x = 3,897,017.06/2,125.90
  6. Step 6: Final answer
    x = 1,833.12

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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.