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Finding the Fourth Proportional to 5,427.90, 7,391.16 and 5,427.90

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Solution

The fourth proportional to 5,427.90, 7,391.16 and 5,427.90 is: 7,391.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,427.90 : 7,391.16 = 5,427.90 : x
  2. Step 2: Convert to fraction form
    5,427.90/7,391.16 = 5,427.90/x
  3. Step 3: Cross multiply
    5,427.90x = 7,391.16 × 5,427.90
  4. Step 4: Simplify right side
    5,427.90x = 40,118,477.36
  5. Step 5: Solve for x
    x = 40,118,477.36/5,427.90
  6. Step 6: Final answer
    x = 7,391.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.