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Finding the Fourth Proportional to 5,490.80, 8,237.40 and 1,792.40

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Solution

The fourth proportional to 5,490.80, 8,237.40 and 1,792.40 is: 2,688.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,490.80 : 8,237.40 = 1,792.40 : x
  2. Step 2: Convert to fraction form
    5,490.80/8,237.40 = 1,792.40/x
  3. Step 3: Cross multiply
    5,490.80x = 8,237.40 × 1,792.40
  4. Step 4: Simplify right side
    5,490.80x = 14,764,715.76
  5. Step 5: Solve for x
    x = 14,764,715.76/5,490.80
  6. Step 6: Final answer
    x = 2,688.99

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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.