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Finding the Fourth Proportional to 3,240.87, 4,854.95 and 1,681.89

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Solution

The fourth proportional to 3,240.87, 4,854.95 and 1,681.89 is: 2,519.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240.87 : 4,854.95 = 1,681.89 : x
  2. Step 2: Convert to fraction form
    3,240.87/4,854.95 = 1,681.89/x
  3. Step 3: Cross multiply
    3,240.87x = 4,854.95 × 1,681.89
  4. Step 4: Simplify right side
    3,240.87x = 8,165,491.86
  5. Step 5: Solve for x
    x = 8,165,491.86/3,240.87
  6. Step 6: Final answer
    x = 2,519.54

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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.