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Finding the Fourth Proportional to 4,947.53, 7,421.85 and 1,660.85

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Solution

The fourth proportional to 4,947.53, 7,421.85 and 1,660.85 is: 2,491.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,947.53 : 7,421.85 = 1,660.85 : x
  2. Step 2: Convert to fraction form
    4,947.53/7,421.85 = 1,660.85/x
  3. Step 3: Cross multiply
    4,947.53x = 7,421.85 × 1,660.85
  4. Step 4: Simplify right side
    4,947.53x = 12,326,579.57
  5. Step 5: Solve for x
    x = 12,326,579.57/4,947.53
  6. Step 6: Final answer
    x = 2,491.46

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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.