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Finding the Fourth Proportional to 5,124.77, 7,687.16 and 1,427.01

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Solution

The fourth proportional to 5,124.77, 7,687.16 and 1,427.01 is: 2,140.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,124.77 : 7,687.16 = 1,427.01 : x
  2. Step 2: Convert to fraction form
    5,124.77/7,687.16 = 1,427.01/x
  3. Step 3: Cross multiply
    5,124.77x = 7,687.16 × 1,427.01
  4. Step 4: Simplify right side
    5,124.77x = 10,969,648.15
  5. Step 5: Solve for x
    x = 10,969,648.15/5,124.77
  6. Step 6: Final answer
    x = 2,140.51

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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.