Home / 1,903.24-2,855.34-1,688.20

Finding the Fourth Proportional to 1,903.24, 2,855.34 and 1,688.20

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Solution

The fourth proportional to 1,903.24, 2,855.34 and 1,688.20 is: 2,532.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,903.24 : 2,855.34 = 1,688.20 : x
  2. Step 2: Convert to fraction form
    1,903.24/2,855.34 = 1,688.20/x
  3. Step 3: Cross multiply
    1,903.24x = 2,855.34 × 1,688.20
  4. Step 4: Simplify right side
    1,903.24x = 4,820,384.99
  5. Step 5: Solve for x
    x = 4,820,384.99/1,903.24
  6. Step 6: Final answer
    x = 2,532.73

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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.