Home / 7,135.20-9,846.36-3,948.72

Finding the Fourth Proportional to 7,135.20, 9,846.36 and 3,948.72

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Solution

The fourth proportional to 7,135.20, 9,846.36 and 3,948.72 is: 5,449.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,135.20 : 9,846.36 = 3,948.72 : x
  2. Step 2: Convert to fraction form
    7,135.20/9,846.36 = 3,948.72/x
  3. Step 3: Cross multiply
    7,135.20x = 9,846.36 × 3,948.72
  4. Step 4: Simplify right side
    7,135.20x = 38,880,518.66
  5. Step 5: Solve for x
    x = 38,880,518.66/7,135.20
  6. Step 6: Final answer
    x = 5,449.11

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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.