Home / 3,869.48-5,339.86-2,101.07

Finding the Fourth Proportional to 3,869.48, 5,339.86 and 2,101.07

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Solution

The fourth proportional to 3,869.48, 5,339.86 and 2,101.07 is: 2,899.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.48 : 5,339.86 = 2,101.07 : x
  2. Step 2: Convert to fraction form
    3,869.48/5,339.86 = 2,101.07/x
  3. Step 3: Cross multiply
    3,869.48x = 5,339.86 × 2,101.07
  4. Step 4: Simplify right side
    3,869.48x = 11,219,387.70
  5. Step 5: Solve for x
    x = 11,219,387.70/3,869.48
  6. Step 6: Final answer
    x = 2,899.46

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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.