Home / 1,685.40-2,325.48-1,095.72

Finding the Fourth Proportional to 1,685.40, 2,325.48 and 1,095.72

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Solution

The fourth proportional to 1,685.40, 2,325.48 and 1,095.72 is: 1,511.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,685.40 : 2,325.48 = 1,095.72 : x
  2. Step 2: Convert to fraction form
    1,685.40/2,325.48 = 1,095.72/x
  3. Step 3: Cross multiply
    1,685.40x = 2,325.48 × 1,095.72
  4. Step 4: Simplify right side
    1,685.40x = 2,548,074.95
  5. Step 5: Solve for x
    x = 2,548,074.95/1,685.40
  6. Step 6: Final answer
    x = 1,511.85

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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.