Home / 7,225.80-9,970.20-4,081.56

Finding the Fourth Proportional to 7,225.80, 9,970.20 and 4,081.56

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Solution

The fourth proportional to 7,225.80, 9,970.20 and 4,081.56 is: 5,631.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,225.80 : 9,970.20 = 4,081.56 : x
  2. Step 2: Convert to fraction form
    7,225.80/9,970.20 = 4,081.56/x
  3. Step 3: Cross multiply
    7,225.80x = 9,970.20 × 4,081.56
  4. Step 4: Simplify right side
    7,225.80x = 40,693,969.51
  5. Step 5: Solve for x
    x = 40,693,969.51/7,225.80
  6. Step 6: Final answer
    x = 5,631.76

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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.