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Finding the Fourth Proportional to 5,314.18, 7,971.18 and 2,390.42

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Solution

The fourth proportional to 5,314.18, 7,971.18 and 2,390.42 is: 3,585.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,314.18 : 7,971.18 = 2,390.42 : x
  2. Step 2: Convert to fraction form
    5,314.18/7,971.18 = 2,390.42/x
  3. Step 3: Cross multiply
    5,314.18x = 7,971.18 × 2,390.42
  4. Step 4: Simplify right side
    5,314.18x = 19,054,468.10
  5. Step 5: Solve for x
    x = 19,054,468.10/5,314.18
  6. Step 6: Final answer
    x = 3,585.59

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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.