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Finding the Fourth Proportional to 5,368.53, 7,409.50 and 3,131.72

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Solution

The fourth proportional to 5,368.53, 7,409.50 and 3,131.72 is: 4,322.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,368.53 : 7,409.50 = 3,131.72 : x
  2. Step 2: Convert to fraction form
    5,368.53/7,409.50 = 3,131.72/x
  3. Step 3: Cross multiply
    5,368.53x = 7,409.50 × 3,131.72
  4. Step 4: Simplify right side
    5,368.53x = 23,204,434.46
  5. Step 5: Solve for x
    x = 23,204,434.46/5,368.53
  6. Step 6: Final answer
    x = 4,322.31

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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.