Home / 1,869.10-2,581.08-1,207.08

Finding the Fourth Proportional to 1,869.10, 2,581.08 and 1,207.08

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Solution

The fourth proportional to 1,869.10, 2,581.08 and 1,207.08 is: 1,666.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869.10 : 2,581.08 = 1,207.08 : x
  2. Step 2: Convert to fraction form
    1,869.10/2,581.08 = 1,207.08/x
  3. Step 3: Cross multiply
    1,869.10x = 2,581.08 × 1,207.08
  4. Step 4: Simplify right side
    1,869.10x = 3,115,570.05
  5. Step 5: Solve for x
    x = 3,115,570.05/1,869.10
  6. Step 6: Final answer
    x = 1,666.88

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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.