Home / 2,122.51-2,929.04-1,178.31

Finding the Fourth Proportional to 2,122.51, 2,929.04 and 1,178.31

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Solution

The fourth proportional to 2,122.51, 2,929.04 and 1,178.31 is: 1,626.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.51 : 2,929.04 = 1,178.31 : x
  2. Step 2: Convert to fraction form
    2,122.51/2,929.04 = 1,178.31/x
  3. Step 3: Cross multiply
    2,122.51x = 2,929.04 × 1,178.31
  4. Step 4: Simplify right side
    2,122.51x = 3,451,317.12
  5. Step 5: Solve for x
    x = 3,451,317.12/2,122.51
  6. Step 6: Final answer
    x = 1,626.05

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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.