Home / 1,885.12-2,823.36-1,690.72

Finding the Fourth Proportional to 1,885.12, 2,823.36 and 1,690.72

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Solution

The fourth proportional to 1,885.12, 2,823.36 and 1,690.72 is: 2,532.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,885.12 : 2,823.36 = 1,690.72 : x
  2. Step 2: Convert to fraction form
    1,885.12/2,823.36 = 1,690.72/x
  3. Step 3: Cross multiply
    1,885.12x = 2,823.36 × 1,690.72
  4. Step 4: Simplify right side
    1,885.12x = 4,773,511.22
  5. Step 5: Solve for x
    x = 4,773,511.22/1,885.12
  6. Step 6: Final answer
    x = 2,532.21

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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.