Home / 5,113.58-7,665.20-1,991.64

Finding the Fourth Proportional to 5,113.58, 7,665.20 and 1,991.64

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Solution

The fourth proportional to 5,113.58, 7,665.20 and 1,991.64 is: 2,985.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,113.58 : 7,665.20 = 1,991.64 : x
  2. Step 2: Convert to fraction form
    5,113.58/7,665.20 = 1,991.64/x
  3. Step 3: Cross multiply
    5,113.58x = 7,665.20 × 1,991.64
  4. Step 4: Simplify right side
    5,113.58x = 15,266,318.93
  5. Step 5: Solve for x
    x = 15,266,318.93/5,113.58
  6. Step 6: Final answer
    x = 2,985.45

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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.