Home / 3,913.80-5,869.48-1,316.13

Finding the Fourth Proportional to 3,913.80, 5,869.48 and 1,316.13

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Solution

The fourth proportional to 3,913.80, 5,869.48 and 1,316.13 is: 1,973.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.80 : 5,869.48 = 1,316.13 : x
  2. Step 2: Convert to fraction form
    3,913.80/5,869.48 = 1,316.13/x
  3. Step 3: Cross multiply
    3,913.80x = 5,869.48 × 1,316.13
  4. Step 4: Simplify right side
    3,913.80x = 7,724,998.71
  5. Step 5: Solve for x
    x = 7,724,998.71/3,913.80
  6. Step 6: Final answer
    x = 1,973.78

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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.