Home / 2,135.32-2,921.40-2,126.10

Finding the Fourth Proportional to 2,135.32, 2,921.40 and 2,126.10

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Solution

The fourth proportional to 2,135.32, 2,921.40 and 2,126.10 is: 2,908.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.32 : 2,921.40 = 2,126.10 : x
  2. Step 2: Convert to fraction form
    2,135.32/2,921.40 = 2,126.10/x
  3. Step 3: Cross multiply
    2,135.32x = 2,921.40 × 2,126.10
  4. Step 4: Simplify right side
    2,135.32x = 6,211,188.54
  5. Step 5: Solve for x
    x = 6,211,188.54/2,135.32
  6. Step 6: Final answer
    x = 2,908.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.