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Finding the Fourth Proportional to 5,315.16, 7,973.14 and 1,617.70

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Solution

The fourth proportional to 5,315.16, 7,973.14 and 1,617.70 is: 2,426.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315.16 : 7,973.14 = 1,617.70 : x
  2. Step 2: Convert to fraction form
    5,315.16/7,973.14 = 1,617.70/x
  3. Step 3: Cross multiply
    5,315.16x = 7,973.14 × 1,617.70
  4. Step 4: Simplify right side
    5,315.16x = 12,898,144.53
  5. Step 5: Solve for x
    x = 12,898,144.53/5,315.16
  6. Step 6: Final answer
    x = 2,426.67

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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.