Home / 4,752.85-7,125.42-1,981.60

Finding the Fourth Proportional to 4,752.85, 7,125.42 and 1,981.60

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Solution

The fourth proportional to 4,752.85, 7,125.42 and 1,981.60 is: 2,970.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,752.85 : 7,125.42 = 1,981.60 : x
  2. Step 2: Convert to fraction form
    4,752.85/7,125.42 = 1,981.60/x
  3. Step 3: Cross multiply
    4,752.85x = 7,125.42 × 1,981.60
  4. Step 4: Simplify right side
    4,752.85x = 14,119,737.23
  5. Step 5: Solve for x
    x = 14,119,737.23/4,752.85
  6. Step 6: Final answer
    x = 2,970.79

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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.