Home / 7,900.20-10,902.31-4,315.19

Finding the Fourth Proportional to 7,900.20, 10,902.31 and 4,315.19

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Solution

The fourth proportional to 7,900.20, 10,902.31 and 4,315.19 is: 5,954.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,900.20 : 10,902.31 = 4,315.19 : x
  2. Step 2: Convert to fraction form
    7,900.20/10,902.31 = 4,315.19/x
  3. Step 3: Cross multiply
    7,900.20x = 10,902.31 × 4,315.19
  4. Step 4: Simplify right side
    7,900.20x = 47,045,473.79
  5. Step 5: Solve for x
    x = 47,045,473.79/7,900.20
  6. Step 6: Final answer
    x = 5,954.97

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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.