Home / 1,531.72-2,298.30-1,115.08

Finding the Fourth Proportional to 1,531.72, 2,298.30 and 1,115.08

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Solution

The fourth proportional to 1,531.72, 2,298.30 and 1,115.08 is: 1,673.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,531.72 : 2,298.30 = 1,115.08 : x
  2. Step 2: Convert to fraction form
    1,531.72/2,298.30 = 1,115.08/x
  3. Step 3: Cross multiply
    1,531.72x = 2,298.30 × 1,115.08
  4. Step 4: Simplify right side
    1,531.72x = 2,562,788.36
  5. Step 5: Solve for x
    x = 2,562,788.36/1,531.72
  6. Step 6: Final answer
    x = 1,673.14

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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.