Home / 2,129.23-3,187.66-1,305.01

Finding the Fourth Proportional to 2,129.23, 3,187.66 and 1,305.01

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Solution

The fourth proportional to 2,129.23, 3,187.66 and 1,305.01 is: 1,953.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.23 : 3,187.66 = 1,305.01 : x
  2. Step 2: Convert to fraction form
    2,129.23/3,187.66 = 1,305.01/x
  3. Step 3: Cross multiply
    2,129.23x = 3,187.66 × 1,305.01
  4. Step 4: Simplify right side
    2,129.23x = 4,159,928.18
  5. Step 5: Solve for x
    x = 4,159,928.18/2,129.23
  6. Step 6: Final answer
    x = 1,953.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.