Home / 3,612.95-4,985.07-2,120.33

Finding the Fourth Proportional to 3,612.95, 4,985.07 and 2,120.33

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Solution

The fourth proportional to 3,612.95, 4,985.07 and 2,120.33 is: 2,925.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.95 : 4,985.07 = 2,120.33 : x
  2. Step 2: Convert to fraction form
    3,612.95/4,985.07 = 2,120.33/x
  3. Step 3: Cross multiply
    3,612.95x = 4,985.07 × 2,120.33
  4. Step 4: Simplify right side
    3,612.95x = 10,569,993.47
  5. Step 5: Solve for x
    x = 10,569,993.47/3,612.95
  6. Step 6: Final answer
    x = 2,925.59

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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.