Home / 5,315.12-7,973.83-1,617.64

Finding the Fourth Proportional to 5,315.12, 7,973.83 and 1,617.64

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Solution

The fourth proportional to 5,315.12, 7,973.83 and 1,617.64 is: 2,426.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315.12 : 7,973.83 = 1,617.64 : x
  2. Step 2: Convert to fraction form
    5,315.12/7,973.83 = 1,617.64/x
  3. Step 3: Cross multiply
    5,315.12x = 7,973.83 × 1,617.64
  4. Step 4: Simplify right side
    5,315.12x = 12,898,798.35
  5. Step 5: Solve for x
    x = 12,898,798.35/5,315.12
  6. Step 6: Final answer
    x = 2,426.81

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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.