Home / 5,315.36-7,966.10-2,191.80

Finding the Fourth Proportional to 5,315.36, 7,966.10 and 2,191.80

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Solution

The fourth proportional to 5,315.36, 7,966.10 and 2,191.80 is: 3,284.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315.36 : 7,966.10 = 2,191.80 : x
  2. Step 2: Convert to fraction form
    5,315.36/7,966.10 = 2,191.80/x
  3. Step 3: Cross multiply
    5,315.36x = 7,966.10 × 2,191.80
  4. Step 4: Simplify right side
    5,315.36x = 17,460,097.98
  5. Step 5: Solve for x
    x = 17,460,097.98/5,315.36
  6. Step 6: Final answer
    x = 3,284.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.