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Finding the Fourth Proportional to 3,521.67, 5,280.67 and 1,877.77

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Solution

The fourth proportional to 3,521.67, 5,280.67 and 1,877.77 is: 2,815.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,521.67 : 5,280.67 = 1,877.77 : x
  2. Step 2: Convert to fraction form
    3,521.67/5,280.67 = 1,877.77/x
  3. Step 3: Cross multiply
    3,521.67x = 5,280.67 × 1,877.77
  4. Step 4: Simplify right side
    3,521.67x = 9,915,883.71
  5. Step 5: Solve for x
    x = 9,915,883.71/3,521.67
  6. Step 6: Final answer
    x = 2,815.68

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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.