Home / 3,160-4,741.35-1,211.95

Finding the Fourth Proportional to 3,160, 4,741.35 and 1,211.95

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Solution

The fourth proportional to 3,160, 4,741.35 and 1,211.95 is: 1,818.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,160 : 4,741.35 = 1,211.95 : x
  2. Step 2: Convert to fraction form
    3,160/4,741.35 = 1,211.95/x
  3. Step 3: Cross multiply
    3,160x = 4,741.35 × 1,211.95
  4. Step 4: Simplify right side
    3,160x = 5,746,279.13
  5. Step 5: Solve for x
    x = 5,746,279.13/3,160
  6. Step 6: Final answer
    x = 1,818.44

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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.