Home / 5,126.76-7,690.28-1,429

Finding the Fourth Proportional to 5,126.76, 7,690.28 and 1,429

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Solution

The fourth proportional to 5,126.76, 7,690.28 and 1,429 is: 2,143.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,126.76 : 7,690.28 = 1,429 : x
  2. Step 2: Convert to fraction form
    5,126.76/7,690.28 = 1,429/x
  3. Step 3: Cross multiply
    5,126.76x = 7,690.28 × 1,429
  4. Step 4: Simplify right side
    5,126.76x = 10,989,410.12
  5. Step 5: Solve for x
    x = 10,989,410.12/5,126.76
  6. Step 6: Final answer
    x = 2,143.54

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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.