Home / 2,130.23-3,190.64-1,306.02

Finding the Fourth Proportional to 2,130.23, 3,190.64 and 1,306.02

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Solution

The fourth proportional to 2,130.23, 3,190.64 and 1,306.02 is: 1,956.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.23 : 3,190.64 = 1,306.02 : x
  2. Step 2: Convert to fraction form
    2,130.23/3,190.64 = 1,306.02/x
  3. Step 3: Cross multiply
    2,130.23x = 3,190.64 × 1,306.02
  4. Step 4: Simplify right side
    2,130.23x = 4,167,033.12
  5. Step 5: Solve for x
    x = 4,167,033.12/2,130.23
  6. Step 6: Final answer
    x = 1,956.15

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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.