Home / 7,135.40-9,846.61-3,948.83

Finding the Fourth Proportional to 7,135.40, 9,846.61 and 3,948.83

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Solution

The fourth proportional to 7,135.40, 9,846.61 and 3,948.83 is: 5,449.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,135.40 : 9,846.61 = 3,948.83 : x
  2. Step 2: Convert to fraction form
    7,135.40/9,846.61 = 3,948.83/x
  3. Step 3: Cross multiply
    7,135.40x = 9,846.61 × 3,948.83
  4. Step 4: Simplify right side
    7,135.40x = 38,882,547.07
  5. Step 5: Solve for x
    x = 38,882,547.07/7,135.40
  6. Step 6: Final answer
    x = 5,449.25

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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.