Home / 2,138.84-2,949.74-1,508.25

Finding the Fourth Proportional to 2,138.84, 2,949.74 and 1,508.25

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Solution

The fourth proportional to 2,138.84, 2,949.74 and 1,508.25 is: 2,080.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138.84 : 2,949.74 = 1,508.25 : x
  2. Step 2: Convert to fraction form
    2,138.84/2,949.74 = 1,508.25/x
  3. Step 3: Cross multiply
    2,138.84x = 2,949.74 × 1,508.25
  4. Step 4: Simplify right side
    2,138.84x = 4,448,937.81
  5. Step 5: Solve for x
    x = 4,448,937.81/2,138.84
  6. Step 6: Final answer
    x = 2,080.08

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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.