Home / 2,122.16-2,928.75-1,178.25

Finding the Fourth Proportional to 2,122.16, 2,928.75 and 1,178.25

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Solution

The fourth proportional to 2,122.16, 2,928.75 and 1,178.25 is: 1,626.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.16 : 2,928.75 = 1,178.25 : x
  2. Step 2: Convert to fraction form
    2,122.16/2,928.75 = 1,178.25/x
  3. Step 3: Cross multiply
    2,122.16x = 2,928.75 × 1,178.25
  4. Step 4: Simplify right side
    2,122.16x = 3,450,799.69
  5. Step 5: Solve for x
    x = 3,450,799.69/2,122.16
  6. Step 6: Final answer
    x = 1,626.08

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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.