Home / 5,315.62-7,973.76-1,618.12

Finding the Fourth Proportional to 5,315.62, 7,973.76 and 1,618.12

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Solution

The fourth proportional to 5,315.62, 7,973.76 and 1,618.12 is: 2,427.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315.62 : 7,973.76 = 1,618.12 : x
  2. Step 2: Convert to fraction form
    5,315.62/7,973.76 = 1,618.12/x
  3. Step 3: Cross multiply
    5,315.62x = 7,973.76 × 1,618.12
  4. Step 4: Simplify right side
    5,315.62x = 12,902,500.53
  5. Step 5: Solve for x
    x = 12,902,500.53/5,315.62
  6. Step 6: Final answer
    x = 2,427.28

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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.