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Finding the Fourth Proportional to 5,277.64, 7,916.28 and 2,505.64

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Solution

The fourth proportional to 5,277.64, 7,916.28 and 2,505.64 is: 3,758.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,277.64 : 7,916.28 = 2,505.64 : x
  2. Step 2: Convert to fraction form
    5,277.64/7,916.28 = 2,505.64/x
  3. Step 3: Cross multiply
    5,277.64x = 7,916.28 × 2,505.64
  4. Step 4: Simplify right side
    5,277.64x = 19,835,347.82
  5. Step 5: Solve for x
    x = 19,835,347.82/5,277.64
  6. Step 6: Final answer
    x = 3,758.37

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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.