Home / 2,126.30-3,189.48-810.06

Finding the Fourth Proportional to 2,126.30, 3,189.48 and 810.06

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Solution

The fourth proportional to 2,126.30, 3,189.48 and 810.06 is: 1,215.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.30 : 3,189.48 = 810.06 : x
  2. Step 2: Convert to fraction form
    2,126.30/3,189.48 = 810.06/x
  3. Step 3: Cross multiply
    2,126.30x = 3,189.48 × 810.06
  4. Step 4: Simplify right side
    2,126.30x = 2,583,670.17
  5. Step 5: Solve for x
    x = 2,583,670.17/2,126.30
  6. Step 6: Final answer
    x = 1,215.10

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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.