Home / 5,129.07-7,693.58-1,431.30

Finding the Fourth Proportional to 5,129.07, 7,693.58 and 1,431.30

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Solution

The fourth proportional to 5,129.07, 7,693.58 and 1,431.30 is: 2,146.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.07 : 7,693.58 = 1,431.30 : x
  2. Step 2: Convert to fraction form
    5,129.07/7,693.58 = 1,431.30/x
  3. Step 3: Cross multiply
    5,129.07x = 7,693.58 × 1,431.30
  4. Step 4: Simplify right side
    5,129.07x = 11,011,813.90
  5. Step 5: Solve for x
    x = 11,011,813.90/5,129.07
  6. Step 6: Final answer
    x = 2,146.94

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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.