Home / 1,872.96-2,809.47-1,328.10

Finding the Fourth Proportional to 1,872.96, 2,809.47 and 1,328.10

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Solution

The fourth proportional to 1,872.96, 2,809.47 and 1,328.10 is: 1,992.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,872.96 : 2,809.47 = 1,328.10 : x
  2. Step 2: Convert to fraction form
    1,872.96/2,809.47 = 1,328.10/x
  3. Step 3: Cross multiply
    1,872.96x = 2,809.47 × 1,328.10
  4. Step 4: Simplify right side
    1,872.96x = 3,731,257.11
  5. Step 5: Solve for x
    x = 3,731,257.11/1,872.96
  6. Step 6: Final answer
    x = 1,992.17

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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.