Home / 5,490-8,235.32-1,792.60

Finding the Fourth Proportional to 5,490, 8,235.32 and 1,792.60

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Solution

The fourth proportional to 5,490, 8,235.32 and 1,792.60 is: 2,689.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,490 : 8,235.32 = 1,792.60 : x
  2. Step 2: Convert to fraction form
    5,490/8,235.32 = 1,792.60/x
  3. Step 3: Cross multiply
    5,490x = 8,235.32 × 1,792.60
  4. Step 4: Simplify right side
    5,490x = 14,762,634.63
  5. Step 5: Solve for x
    x = 14,762,634.63/5,490
  6. Step 6: Final answer
    x = 2,689.00

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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.