Home / 3,612.95-4,985.51-2,100.09

Finding the Fourth Proportional to 3,612.95, 4,985.51 and 2,100.09

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Solution

The fourth proportional to 3,612.95, 4,985.51 and 2,100.09 is: 2,897.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.95 : 4,985.51 = 2,100.09 : x
  2. Step 2: Convert to fraction form
    3,612.95/4,985.51 = 2,100.09/x
  3. Step 3: Cross multiply
    3,612.95x = 4,985.51 × 2,100.09
  4. Step 4: Simplify right side
    3,612.95x = 10,470,009.20
  5. Step 5: Solve for x
    x = 10,470,009.20/3,612.95
  6. Step 6: Final answer
    x = 2,897.92

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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.