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Finding the Fourth Proportional to 3,888.72, 5,364.68 and 2,823.75

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Solution

The fourth proportional to 3,888.72, 5,364.68 and 2,823.75 is: 3,895.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.72 : 5,364.68 = 2,823.75 : x
  2. Step 2: Convert to fraction form
    3,888.72/5,364.68 = 2,823.75/x
  3. Step 3: Cross multiply
    3,888.72x = 5,364.68 × 2,823.75
  4. Step 4: Simplify right side
    3,888.72x = 15,148,501.03
  5. Step 5: Solve for x
    x = 15,148,501.03/3,888.72
  6. Step 6: Final answer
    x = 3,895.50

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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.