Home / 3,913.48-5,869.32-1,139.50

Finding the Fourth Proportional to 3,913.48, 5,869.32 and 1,139.50

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Solution

The fourth proportional to 3,913.48, 5,869.32 and 1,139.50 is: 1,708.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.48 : 5,869.32 = 1,139.50 : x
  2. Step 2: Convert to fraction form
    3,913.48/5,869.32 = 1,139.50/x
  3. Step 3: Cross multiply
    3,913.48x = 5,869.32 × 1,139.50
  4. Step 4: Simplify right side
    3,913.48x = 6,688,090.14
  5. Step 5: Solve for x
    x = 6,688,090.14/3,913.48
  6. Step 6: Final answer
    x = 1,708.99

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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.