Home / 3,872,781.28-5,344,506.80-2,153,902.56

Finding the Fourth Proportional to 3,872,781.28, 5,344,506.80 and 2,153,902.56

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Solution

The fourth proportional to 3,872,781.28, 5,344,506.80 and 2,153,902.56 is: 2,972,423.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,872,781.28 : 5,344,506.80 = 2,153,902.56 : x
  2. Step 2: Convert to fraction form
    3,872,781.28/5,344,506.80 = 2,153,902.56/x
  3. Step 3: Cross multiply
    3,872,781.28x = 5,344,506.80 × 2,153,902.56
  4. Step 4: Simplify right side
    3,872,781.28x = 11,511,546,878,457.41
  5. Step 5: Solve for x
    x = 11,511,546,878,457.41/3,872,781.28
  6. Step 6: Final answer
    x = 2,972,423.70

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1.5x scale

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.