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Finding the Fourth Proportional to 3,342.53, 5,013.15 and 1,780.67

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Solution

The fourth proportional to 3,342.53, 5,013.15 and 1,780.67 is: 2,670.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,342.53 : 5,013.15 = 1,780.67 : x
  2. Step 2: Convert to fraction form
    3,342.53/5,013.15 = 1,780.67/x
  3. Step 3: Cross multiply
    3,342.53x = 5,013.15 × 1,780.67
  4. Step 4: Simplify right side
    3,342.53x = 8,926,765.81
  5. Step 5: Solve for x
    x = 8,926,765.81/3,342.53
  6. Step 6: Final answer
    x = 2,670.66

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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.