Home / 1,900.08-2,621.76-1,310.40

Finding the Fourth Proportional to 1,900.08, 2,621.76 and 1,310.40

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Solution

The fourth proportional to 1,900.08, 2,621.76 and 1,310.40 is: 1,808.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,900.08 : 2,621.76 = 1,310.40 : x
  2. Step 2: Convert to fraction form
    1,900.08/2,621.76 = 1,310.40/x
  3. Step 3: Cross multiply
    1,900.08x = 2,621.76 × 1,310.40
  4. Step 4: Simplify right side
    1,900.08x = 3,435,554.30
  5. Step 5: Solve for x
    x = 3,435,554.30/1,900.08
  6. Step 6: Final answer
    x = 1,808.11

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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.