Home / 5,715.80-8,574.32-1,819.30

Finding the Fourth Proportional to 5,715.80, 8,574.32 and 1,819.30

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Solution

The fourth proportional to 5,715.80, 8,574.32 and 1,819.30 is: 2,729.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,715.80 : 8,574.32 = 1,819.30 : x
  2. Step 2: Convert to fraction form
    5,715.80/8,574.32 = 1,819.30/x
  3. Step 3: Cross multiply
    5,715.80x = 8,574.32 × 1,819.30
  4. Step 4: Simplify right side
    5,715.80x = 15,599,260.38
  5. Step 5: Solve for x
    x = 15,599,260.38/5,715.80
  6. Step 6: Final answer
    x = 2,729.15

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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.