Home / 3,930,875.80-5,891,336.10-1,909,582.36

Finding the Fourth Proportional to 3,930,875.80, 5,891,336.10 and 1,909,582.36

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Solution

The fourth proportional to 3,930,875.80, 5,891,336.10 and 1,909,582.36 is: 2,861,955.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930,875.80 : 5,891,336.10 = 1,909,582.36 : x
  2. Step 2: Convert to fraction form
    3,930,875.80/5,891,336.10 = 1,909,582.36/x
  3. Step 3: Cross multiply
    3,930,875.80x = 5,891,336.10 × 1,909,582.36
  4. Step 4: Simplify right side
    3,930,875.80x = 11,249,991,493,391.20
  5. Step 5: Solve for x
    x = 11,249,991,493,391.20/3,930,875.80
  6. Step 6: Final answer
    x = 2,861,955.47

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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.