Home / 3,890.05-5,835.36-1,116.70

Finding the Fourth Proportional to 3,890.05, 5,835.36 and 1,116.70

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Solution

The fourth proportional to 3,890.05, 5,835.36 and 1,116.70 is: 1,675.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.05 : 5,835.36 = 1,116.70 : x
  2. Step 2: Convert to fraction form
    3,890.05/5,835.36 = 1,116.70/x
  3. Step 3: Cross multiply
    3,890.05x = 5,835.36 × 1,116.70
  4. Step 4: Simplify right side
    3,890.05x = 6,516,317.34
  5. Step 5: Solve for x
    x = 6,516,317.34/3,890.05
  6. Step 6: Final answer
    x = 1,675.13

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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.