Home / 3,913.86-5,871.81-1,140.47

Finding the Fourth Proportional to 3,913.86, 5,871.81 and 1,140.47

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Solution

The fourth proportional to 3,913.86, 5,871.81 and 1,140.47 is: 1,711.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.86 : 5,871.81 = 1,140.47 : x
  2. Step 2: Convert to fraction form
    3,913.86/5,871.81 = 1,140.47/x
  3. Step 3: Cross multiply
    3,913.86x = 5,871.81 × 1,140.47
  4. Step 4: Simplify right side
    3,913.86x = 6,696,623.15
  5. Step 5: Solve for x
    x = 6,696,623.15/3,913.86
  6. Step 6: Final answer
    x = 1,711.00

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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.