Home / 3,891,386.88-5,370,118.56-2,172,506.40

Finding the Fourth Proportional to 3,891,386.88, 5,370,118.56 and 2,172,506.40

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Solution

The fourth proportional to 3,891,386.88, 5,370,118.56 and 2,172,506.40 is: 2,998,061.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891,386.88 : 5,370,118.56 = 2,172,506.40 : x
  2. Step 2: Convert to fraction form
    3,891,386.88/5,370,118.56 = 2,172,506.40/x
  3. Step 3: Cross multiply
    3,891,386.88x = 5,370,118.56 × 2,172,506.40
  4. Step 4: Simplify right side
    3,891,386.88x = 11,666,616,940,358.78
  5. Step 5: Solve for x
    x = 11,666,616,940,358.78/3,891,386.88
  6. Step 6: Final answer
    x = 2,998,061.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.