Home / 7,120.05-9,821.52-4,285.46

Finding the Fourth Proportional to 7,120.05, 9,821.52 and 4,285.46

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Solution

The fourth proportional to 7,120.05, 9,821.52 and 4,285.46 is: 5,911.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.05 : 9,821.52 = 4,285.46 : x
  2. Step 2: Convert to fraction form
    7,120.05/9,821.52 = 4,285.46/x
  3. Step 3: Cross multiply
    7,120.05x = 9,821.52 × 4,285.46
  4. Step 4: Simplify right side
    7,120.05x = 42,089,681.99
  5. Step 5: Solve for x
    x = 42,089,681.99/7,120.05
  6. Step 6: Final answer
    x = 5,911.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.