Home / 3,130.55-4,697.45-1,376.79

Finding the Fourth Proportional to 3,130.55, 4,697.45 and 1,376.79

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Solution

The fourth proportional to 3,130.55, 4,697.45 and 1,376.79 is: 2,065.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.55 : 4,697.45 = 1,376.79 : x
  2. Step 2: Convert to fraction form
    3,130.55/4,697.45 = 1,376.79/x
  3. Step 3: Cross multiply
    3,130.55x = 4,697.45 × 1,376.79
  4. Step 4: Simplify right side
    3,130.55x = 6,467,400.46
  5. Step 5: Solve for x
    x = 6,467,400.46/3,130.55
  6. Step 6: Final answer
    x = 2,065.90

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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.