Home / 1,325.96-1,984.83-1,129.13

Finding the Fourth Proportional to 1,325.96, 1,984.83 and 1,129.13

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Solution

The fourth proportional to 1,325.96, 1,984.83 and 1,129.13 is: 1,690.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325.96 : 1,984.83 = 1,129.13 : x
  2. Step 2: Convert to fraction form
    1,325.96/1,984.83 = 1,129.13/x
  3. Step 3: Cross multiply
    1,325.96x = 1,984.83 × 1,129.13
  4. Step 4: Simplify right side
    1,325.96x = 2,241,126.14
  5. Step 5: Solve for x
    x = 2,241,126.14/1,325.96
  6. Step 6: Final answer
    x = 1,690.19

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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.