Home / 3,459.97-4,775.47-2,115.81

Finding the Fourth Proportional to 3,459.97, 4,775.47 and 2,115.81

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Solution

The fourth proportional to 3,459.97, 4,775.47 and 2,115.81 is: 2,920.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,459.97 : 4,775.47 = 2,115.81 : x
  2. Step 2: Convert to fraction form
    3,459.97/4,775.47 = 2,115.81/x
  3. Step 3: Cross multiply
    3,459.97x = 4,775.47 × 2,115.81
  4. Step 4: Simplify right side
    3,459.97x = 10,103,987.18
  5. Step 5: Solve for x
    x = 10,103,987.18/3,459.97
  6. Step 6: Final answer
    x = 2,920.25

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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.