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Finding the Fourth Proportional to 5,719.87, 7,896.99 and 4,390.93

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Solution

The fourth proportional to 5,719.87, 7,896.99 and 4,390.93 is: 6,062.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,719.87 : 7,896.99 = 4,390.93 : x
  2. Step 2: Convert to fraction form
    5,719.87/7,896.99 = 4,390.93/x
  3. Step 3: Cross multiply
    5,719.87x = 7,896.99 × 4,390.93
  4. Step 4: Simplify right side
    5,719.87x = 34,675,130.30
  5. Step 5: Solve for x
    x = 34,675,130.30/5,719.87
  6. Step 6: Final answer
    x = 6,062.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.