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Finding the Fourth Proportional to 7,285.66, 10,928.52 and 3,125.32

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Solution

The fourth proportional to 7,285.66, 10,928.52 and 3,125.32 is: 4,687.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,285.66 : 10,928.52 = 3,125.32 : x
  2. Step 2: Convert to fraction form
    7,285.66/10,928.52 = 3,125.32/x
  3. Step 3: Cross multiply
    7,285.66x = 10,928.52 × 3,125.32
  4. Step 4: Simplify right side
    7,285.66x = 34,155,122.13
  5. Step 5: Solve for x
    x = 34,155,122.13/7,285.66
  6. Step 6: Final answer
    x = 4,687.99

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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.