Home / 3,312.36-4,961.93-1,921.59

Finding the Fourth Proportional to 3,312.36, 4,961.93 and 1,921.59

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Solution

The fourth proportional to 3,312.36, 4,961.93 and 1,921.59 is: 2,878.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,312.36 : 4,961.93 = 1,921.59 : x
  2. Step 2: Convert to fraction form
    3,312.36/4,961.93 = 1,921.59/x
  3. Step 3: Cross multiply
    3,312.36x = 4,961.93 × 1,921.59
  4. Step 4: Simplify right side
    3,312.36x = 9,534,785.46
  5. Step 5: Solve for x
    x = 9,534,785.46/3,312.36
  6. Step 6: Final answer
    x = 2,878.55

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1.5x scale

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.