Home / 3,116.89-4,675.35-808.39

Finding the Fourth Proportional to 3,116.89, 4,675.35 and 808.39

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Solution

The fourth proportional to 3,116.89, 4,675.35 and 808.39 is: 1,212.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,116.89 : 4,675.35 = 808.39 : x
  2. Step 2: Convert to fraction form
    3,116.89/4,675.35 = 808.39/x
  3. Step 3: Cross multiply
    3,116.89x = 4,675.35 × 808.39
  4. Step 4: Simplify right side
    3,116.89x = 3,779,506.19
  5. Step 5: Solve for x
    x = 3,779,506.19/3,116.89
  6. Step 6: Final answer
    x = 1,212.59

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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.