Home / 5,315.60-7,969.08-1,855.28

Finding the Fourth Proportional to 5,315.60, 7,969.08 and 1,855.28

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Solution

The fourth proportional to 5,315.60, 7,969.08 and 1,855.28 is: 2,781.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315.60 : 7,969.08 = 1,855.28 : x
  2. Step 2: Convert to fraction form
    5,315.60/7,969.08 = 1,855.28/x
  3. Step 3: Cross multiply
    5,315.60x = 7,969.08 × 1,855.28
  4. Step 4: Simplify right side
    5,315.60x = 14,784,874.74
  5. Step 5: Solve for x
    x = 14,784,874.74/5,315.60
  6. Step 6: Final answer
    x = 2,781.41

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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.