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Finding the Fourth Proportional to 4,948.77, 7,423.88 and 1,485.57

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Solution

The fourth proportional to 4,948.77, 7,423.88 and 1,485.57 is: 2,228.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,948.77 : 7,423.88 = 1,485.57 : x
  2. Step 2: Convert to fraction form
    4,948.77/7,423.88 = 1,485.57/x
  3. Step 3: Cross multiply
    4,948.77x = 7,423.88 × 1,485.57
  4. Step 4: Simplify right side
    4,948.77x = 11,028,685.98
  5. Step 5: Solve for x
    x = 11,028,685.98/4,948.77
  6. Step 6: Final answer
    x = 2,228.57

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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.