Home / 3,894.50-5,374.40-2,126.10

Finding the Fourth Proportional to 3,894.50, 5,374.40 and 2,126.10

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Solution

The fourth proportional to 3,894.50, 5,374.40 and 2,126.10 is: 2,934.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,894.50 : 5,374.40 = 2,126.10 : x
  2. Step 2: Convert to fraction form
    3,894.50/5,374.40 = 2,126.10/x
  3. Step 3: Cross multiply
    3,894.50x = 5,374.40 × 2,126.10
  4. Step 4: Simplify right side
    3,894.50x = 11,426,511.84
  5. Step 5: Solve for x
    x = 11,426,511.84/3,894.50
  6. Step 6: Final answer
    x = 2,934.01

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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.