Home / 4,748.36-7,122.72-1,285.64

Finding the Fourth Proportional to 4,748.36, 7,122.72 and 1,285.64

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Solution

The fourth proportional to 4,748.36, 7,122.72 and 1,285.64 is: 1,928.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,748.36 : 7,122.72 = 1,285.64 : x
  2. Step 2: Convert to fraction form
    4,748.36/7,122.72 = 1,285.64/x
  3. Step 3: Cross multiply
    4,748.36x = 7,122.72 × 1,285.64
  4. Step 4: Simplify right side
    4,748.36x = 9,157,253.74
  5. Step 5: Solve for x
    x = 9,157,253.74/4,748.36
  6. Step 6: Final answer
    x = 1,928.51

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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.