Home / 2,124.16-2,928-1,945.60

Finding the Fourth Proportional to 2,124.16, 2,928 and 1,945.60

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Solution

The fourth proportional to 2,124.16, 2,928 and 1,945.60 is: 2,681.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,124.16 : 2,928 = 1,945.60 : x
  2. Step 2: Convert to fraction form
    2,124.16/2,928 = 1,945.60/x
  3. Step 3: Cross multiply
    2,124.16x = 2,928 × 1,945.60
  4. Step 4: Simplify right side
    2,124.16x = 5,696,716.80
  5. Step 5: Solve for x
    x = 5,696,716.80/2,124.16
  6. Step 6: Final answer
    x = 2,681.87

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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.