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Finding the Fourth Proportional to 5,281.55, 7,916.82 and 1,768.91

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Solution

The fourth proportional to 5,281.55, 7,916.82 and 1,768.91 is: 2,651.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,281.55 : 7,916.82 = 1,768.91 : x
  2. Step 2: Convert to fraction form
    5,281.55/7,916.82 = 1,768.91/x
  3. Step 3: Cross multiply
    5,281.55x = 7,916.82 × 1,768.91
  4. Step 4: Simplify right side
    5,281.55x = 14,004,102.48
  5. Step 5: Solve for x
    x = 14,004,102.48/5,281.55
  6. Step 6: Final answer
    x = 2,651.52

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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.