Home / 3,897.51-5,374.85-2,551.11

Finding the Fourth Proportional to 3,897.51, 5,374.85 and 2,551.11

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Solution

The fourth proportional to 3,897.51, 5,374.85 and 2,551.11 is: 3,518.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,897.51 : 5,374.85 = 2,551.11 : x
  2. Step 2: Convert to fraction form
    3,897.51/5,374.85 = 2,551.11/x
  3. Step 3: Cross multiply
    3,897.51x = 5,374.85 × 2,551.11
  4. Step 4: Simplify right side
    3,897.51x = 13,711,820.83
  5. Step 5: Solve for x
    x = 13,711,820.83/3,897.51
  6. Step 6: Final answer
    x = 3,518.10

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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.